What are the different types of skin rashes? When should you see a doctor for a persistent or concerning rash? Get the answers to your questions about skin rashes and their potential underlying causes.

Understanding Skin Rashes: Causes and Characteristics

A rash is a broad term that describes any abnormal change in the skin’s texture, color, or appearance. Rashes can range from mild to severe and can occur alone or alongside other medical conditions. Common causes of rashes include chronic skin conditions, allergic reactions, bug bites, and viral, bacterial, or fungal infections.

It is often difficult to determine the exact cause of a rash based on its appearance alone. Healthcare providers will consider various factors, such as the shape, size, location, duration, and associated symptoms, to help diagnose the underlying condition.

Types of Skin Rashes: Infectious vs. Non-Infectious

Rashes can be generally categorized as either infectious or non-infectious. Some examples of non-infectious rashes in adults include:

• Contact Dermatitis: A rash caused by skin irritation or an allergic reaction, often from exposure to a new laundry detergent, soap, or irritant like nickel or poison ivy.
• Eczema: A long-term condition that can affect any part of the body, causing itchy, dry, and cracked skin. It is more common in childhood but can also affect adults.
• Hives: Also known as urticaria, hives are raised, red patches or welts that can be caused by an allergic reaction, exposure to cold, or for unknown reasons.

Examples of infectious rashes include:

1. Shingles: A painful rash that appears as a cluster of blisters down one side of the body, often preceded by a tingling sensation.
2. Ringworm: A fungal infection that causes round, scaly, mildly itchy lesions.
3. Impetigo: A common bacterial skin infection that causes open, red, crusty lesions that may be painful or itchy.

When to Seek Medical Attention for a Rash

Most rashes are not a sign of a dangerous condition and can be safely treated at home. However, there are certain situations where you should seek medical attention for your rash:

Fever and Rash

A high fever combined with a rash may indicate an infection such as herpes, measles, mononucleosis, or scarlet fever. If you have a fever and symptoms of general illness with a rash, it’s important to talk to your doctor or healthcare provider.

Painful or Tender Rash

A painful or tender rash can be a sign of a bacterial infection like impetigo or cellulitis, or the viral infection shingles. These types of rashes require medical attention.

Widespread or Rapidly Spreading Rash

If your rash involves large areas of the body or quickly spreads to different areas, you should consult with your healthcare provider, as this may indicate a more serious underlying condition.

Sudden Onset Rash

Sudden onset of a rash often represents an allergic reaction, though other types of rashes can also present quickly. If your rash is accompanied by other symptoms of a severe allergic reaction, such as difficulty breathing, mouth or throat swelling, or vomiting, you should seek medical care immediately.

Persistent Rash

If your rash is not improving with over-the-counter treatments or is getting worse after a week, it’s a good idea to consult with your healthcare provider.

When K Health Can Help

K Health offers virtual care for a wide range of skin conditions, including rashes. Our AI-powered platform can help you determine the likely cause of your rash and provide personalized treatment recommendations. If necessary, you can connect with a K Health medical provider for further evaluation and prescriptions.

Key Takeaways

• Rashes can be caused by a variety of factors, including skin conditions, allergic reactions, and infections.
• Most rashes are not dangerous and can be safely treated at home, but some may require medical attention.
• Seek medical care if your rash is accompanied by fever, pain, is widespread or rapidly spreading, appears suddenly, or persists for more than a week despite home treatment.
• K Health can provide virtual care and personalized treatment recommendations for a wide range of skin conditions, including rashes.

What You Need To Know- K Health

Most rashes are not a sign of a dangerous condition, and it is safe to treat them at home.

If a rash persists, or is accompanied by other symptoms, it might be time to seek medical attention. 

In this article, I’ll identify 10 signs you should be concerned about your rash.

I’ll also discuss the different types of rashes, when to see a doctor or healthcare provider, and when K Health can help. 

What is a Rash?

Rash is a term that describes skin irritation, discoloration, or an abnormal change in texture.

Rashes can range from mild to severe, and can appear alone or along with other medical conditions.

Common causes of rashes include chronic skin conditions like eczema and psoriasis, allergic reactions, bug bites, and viral, bacterial, or fungal infections.

It is sometimes difficult to tell what has caused a rash by appearance alone.

Healthcare providers will consider many things, including the shape, size, area of the body affected, duration, symptoms, and history of your rash.  

Most rashes do not require any testing to diagnose, but some may require lab testing or referral to a dermatologist to diagnose.

Treatment will depend on the cause, but many rashes can be treated with over-the-counter creams and antihistamines.

More severe rashes may require prescription treatments.

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Types of Rashes

Rashes are generally categorized as infectious or non-infectious.

Examples of non-infectious rashes in adults include:
 

• Contact dermatitis: This type of rash is caused by touching something that causes irritation or an allergic reaction that can cause skin to become itchy, red, blistered, dry, and cracked. Many people experience contact dermatitis when using a new laundry detergent or soap, or after contact with an irritant like nickel or poison ivy.
• Eczema: Eczema can affect any part of the body, and is usually a long-term condition that can be managed with moisturizing creams and corticosteroid creams. While it tends to be more common in childhood, it affects about 16.5 million adults in the USA. Seven types of eczema exist, including atopic, discoid, varicose and pompholyx eczema. Atopic dermatitis is the most common form. It causes the skin to become itchy, dry, and cracked. 

• Hives: Also known as urticaria, hives usually present as raised, red patches or welts on the body. They can be different shapes and sizes, can come and go, and can appear anywhere on the body. People with hives often complain of an itchy, stinging, or burning sensation. Hives are often caused by an allergic reaction, but can also be caused by exposure to cold, a viral or bacterial illness, or for unknown reasons. 

The following are some examples of infectious rashes:

• Shingles: This rash consists of painful blisters and appears as a cluster down one side of the body. It’s usually preceded by a tingling feeling in the area affected, which can be anywhere on the body. Some people feel generally unwell or tired as well. 

• Ringworm: Also called tinea corporis, this fungal infection causes round, scaly, mildly itchy lesions. 

• Impetigo: This is a common bacterial skin infection caused by group A streptococcus or Staphylococcus aureus bacteria. It causes open, red, crusty lesions that may be either painful or itchy. Impetigo can occur alone, or with other symptoms like fever and feeling unwell. 

Most rashes are not dangerous, and can safely be treated at home with antihistamines.

If your rash is accompanied by any of the following symptoms, however, you should speak with your doctor or primary care providers as it could indicate something more serious.

You have a fever

A high fever combined with a rash may indicate an infection such as herpes, measles, mononucleosis, scarlet fever, or many others.

Viral illnesses commonly cause rashes in children, and sometimes adults as well.

If you have a fever and symptoms of general illness with a rash, talk to your doctor or provider. 

If you have fever and a dark purple rash that does not lighten when you push on it, or severe headache or neck stiffness, this can be a sign of a brain or spinal cord infection.

Seek medical care right away.

The rash hurts

A painful or tender rash can be a sign of a bacterial infection like impetigo or cellulitis, or the viral infection shingles. 

The rash is widespread

If your rash involves large areas of the body, or quickly spreads to different areas, talk to your healthcare provider. 

The rash appeared suddenly 

Sudden onset of rash often represents an allergic reaction, though other types of rashes can also present quickly.

If your rash is accompanied by other symptoms of a severe allergic reaction such as difficulty breathing, mouth or throat swelling, or vomiting, you should be seen in person right away.  

The rash has lasted longer than a week

If your rash is getting worse or not improving with antihistamines and care at home, talk to your healthcare provider to find out if any testing is needed and figure out a treatment plan.

The rash is purplish in color

A dark, purplish rash, or a rash coupled with dark bruising, can sometimes be a sign of infection, blood clotting, or a blood vessel problem.

If you notice a dark purple rash that does not get lighter when you push on it, or a rash along with bruising or accompanied by bleeding or any kind, you should be evaluated right away. 

The rash is blistering

Blisters are small pockets of clear fluid under the skin.

Common causes of blisters include viral rashes, shingles, poison ivy or other allergic rash, or sunburn.

All of these can be safely managed at home.

But if blisters are large or severe, occur on the mouth or genitals, or are accompanied by fever or other symptoms, they can be a sign of more severe infection or allergic reaction.

If you have any of those signs, see a doctor or healthcare provider as soon as possible. 

You have difficulty breathing

Difficulty breathing is a serious medical emergency. If this happens to you and you have a rash, call 9-1-1 or go to an ER right away.

You may be experiencing a severe allergic reaction called anaphylaxis. 

The rash looks like a bullseye and you have had a tick exposure

If you have an oval-shaped or round rash that is red on the outside and more clear on the inside—like a bullseye—this can be a sign of Lyme disease if you have recently been bitten by a tick or live in an area where ticks are common.

This condition needs to be diagnosed by testing and treated with antibiotics, so you should talk with a doctor or provider.

You see signs of an infection

Infection can develop on any area of open skin, such as those caused by scratching an itchy rash.

Signs of infection include increased pain, new swelling, worsening redness, warmth to the touch, crusting, yellow or green discharge, and an unpleasant smell.

Many mild rashes can be managed at home with over-the-counter antihistamines, hydrocortisone cream, and cool compresses.

Avoid highly-fragranced bath products, detergents, and soaps when you have a rash. Instead use gentle, unscented products.

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When to See a Doctor or Healthcare Provider

Most rashes are not dangerous and will go away on their own.

Others can be an indication of more serious health conditions.

If your rash is accompanied by high fever, shortness of breath, or dark purple areas, you should be seen right away.

If your rash worsens or does not improve over 1-2 weeks, talk to your primary care provider.

How K Health Can Help

Did you know you can access online urgent care with K Health?

Check your symptoms, explore conditions and treatments, and if needed, text with a healthcare provider in minutes. 

K Health’s AI-powered app is HIPAA compliant and is based on 20 years of clinical data.

Frequently Asked Questions

How can you tell if a rash is serious?

Most rashes are not dangerous. A rash that is dark purple in color, involves the mouth or genitals, or is accompanied by high fever, difficulty breathing, or mouth or throat swelling needs to be evaluated right away. A rash that spreads rapidly or gets worse over time should also be evaluated by a healthcare provider.

Is a full body rash a symptom of COVID-19?

Some people do develop a rash with COVID-19. If you are concerned you may have been exposed to COVID-19 and have a rash, get tested for COVID-19 and isolate from others.

K Health articles are all written and reviewed by MDs, PhDs, NPs, or PharmDs and are for informational purposes only. This information does not constitute and should not be relied on for professional medical advice. Always talk to your doctor about the risks and benefits of any treatment.

K Health has strict sourcing guidelines and relies on peer-reviewed studies, academic research institutions,
and medical associations. We avoid using tertiary references.

• Rashes. (2016).
  https://medlineplus.gov/rashes.html

• Red, Itchy Rash? Get the Skinny on Dermatitis. (2012).
  https://newsinhealth.nih.gov/2012/04/red-itchy-rash

• Rash 101 in adults: When to seek medical treatment. (Date unknown).
  https://www.aad.org/public/everyday-care/itchy-skin/rash/rash-101

• Overview: Contact dermatitis. (2019).
  https://www.nhs.uk/conditions/contact-dermatitis/

• Overview of the Seven Types of Eczema. (Date unknown).
  https://nationaleczema.org/eczema/types-of-eczema/

• What is atopic dermatitis? (Date unknown).
  https://nationaleczema.org/eczema/types-of-eczema/atopic-dermatitis/

• Overview. Atopic eczema. (2019).
  https://www.nhs.uk/conditions/atopic-eczema/

• Hives. (2021).
  https://www.nhs.uk/conditions/hives/

• Shingles. (2021).
  https://www.nhs.uk/conditions/shingles/

• Ringworm. (2020).
  https://www.nhs.uk/conditions/ringworm/

• Lyme disease. (2021).
  https://www.nhs.uk/conditions/lyme-disease/

• Overview: Anaphylaxis. (2019).
  https://www.nhs.uk/conditions/anaphylaxis/

• Overview: Measles (2018).
  https://www.nhs.uk/conditions/measles/

• Scarlet fever. (2021).
  https://www.nhs.uk/conditions/scarlet-fever/

• Vasculitis. (2019).
  https://www.nhs.uk/conditions/vasculitis/

• Overview: Pemphigus Vulgaris. (2018).
  https://www.nhs.uk/conditions/pemphigus-vulgaris/

• Signs and Symptoms of Shingles (Herpes Zoster). (2019).
  https://www.cdc.gov/shingles/about/symptoms.html

• Allergy symptoms: Hives, rashes and swelling. (Date unknown).
  https://uhs.nd.edu/assets/165758/allergies_hives_rashes_handout_509k.pdf

• The Do’s and Don’t of Rashes. (2016).
  https://www.michigan.gov/documents/flintwater/Dos_and_Donts_of_Rashes_Dr_Barkey_Final_530621_7.pdf

• Anti-Inflammatory and Skin Barrier Repair Effects of Topical Application of Some Plant Oils. (2018).
  https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5796020/

Acute Rash – What You Need to Know

Medically reviewed by Drugs.com. Last updated on Jun 6, 2023.

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What is an acute rash?

A rash is irritated, red, or itchy skin or mucus membranes, such as the lining of your nose or throat. Acute means the rash starts suddenly, worsens quickly, and lasts a short time.

What are some common types of rashes?

• Eczema causes inflamed, itchy areas. Your skin may be dry, scaly, and thick. The outer layer may be damaged. Irritants, stress, or a family history of eczema make you more likely to get it.
• Contact dermatitis causes a small, itchy growth that may be flat or raised. It appears after you touch something that damages your skin or causes an allergic reaction. Examples include chemicals, metals, dye, soaps or detergents, and latex.
• Atopic dermatitis causes small, itchy, blister-like growths along skin lines and folds. The growths may ooze fluid and become scaly, crusted, or hard. You may have sore, dry skin or swollen eyes. This rash usually forms after you are around an allergen, are overheated, or wear rough clothing.
• Urticaria (hives) appears suddenly as patches and raised areas of swollen skin or mucus membrane. The area may itch or burn. Common causes include allergens, latex, certain foods, a bee sting, smoke, or a blood transfusion.
• Pityriasis rosea may appear before you get a disease caused by bacteria or a virus. The rash may look like a patch on your chest, back, or abdomen. The rash may spread to become small, red, cone-shaped bumps that usually grow in groups.

How is an acute rash diagnosed?

Your healthcare provider may know what kind of rash you have by looking at it. Tell him or her when and where the rash first appeared. Describe how often you get the rash and if anything causes it, such as food, activity, or stress. Give your provider a list of your medicines, allergies, and health conditions. Include any family history of rashes. A dermatologist (skin specialist) may help find the cause of your rash.

How is an acute rash treated?

Treatment will depend on the condition causing your acute rash. You may need any of the following:

• Medicines may be used to decrease itching or inflammation, or prevent or treat a bacterial infection. Medicines may also help your immune system fight infection or stop it from attacking your skin.
• Ultraviolet phototherapy means the rash is put under light. Light therapy helps treats atopic dermatitis or eczema that does not get better with steroids. It can help pityriasis rosea heal faster and decrease itching.

Treatment options

The following list of medications are in some way related to or used in the treatment of this condition.

• Zyrtec
• Xolair
• Allegra
• Dupixent
• triamcinolone

What can I do to help prevent a rash or care for my skin when I have a rash?

Dry skin can lead to more problems. Do not scratch your skin if it itches. You may cause a skin infection by scratching. The following may prevent dry skin, and help your skin look better:

• Help soothe your rash. Apply thick cream lotions or petroleum jelly. Cool compresses may also soothe your skin. Apply a cool compress or a cool, wet towel, and then cover it with a dry towel.
• Use lukewarm water when you bathe. Hot water may damage your skin more. Pat your skin dry. Do not rub your skin with a towel.
• Use detergents, soaps, shampoos, and bubble baths made for sensitive skin.
• Wear clothes made of cotton instead of nylon or wool. Cotton is softer, so it will not hurt your skin as much.

When should I seek immediate care?

• You have sudden trouble breathing or chest pain.
• You are vomiting, have a headache, your throat hurts, or your muscles are painful.

When should I call my doctor?

• You have a fever.
• You get a cough or cold, or your eyes are red and swollen.
• You get open wounds from scratching your skin, or you have a wound that is red, swollen, or painful.
• You get sores or blisters in your mouth or genital area, or the skin in those areas is peeling off.
• You have new signs or symptoms while being treated with medicines.
• You have swelling or pain in your joints.
• Your rash lasts longer than 3 months.

Care Agreement

You have the right to help plan your care. Learn about your health condition and how it may be treated. Discuss treatment options with your healthcare providers to decide what care you want to receive. You always have the right to refuse treatment. The above information is an educational aid only. It is not intended as medical advice for individual conditions or treatments. Talk to your doctor, nurse or pharmacist before following any medical regimen to see if it is safe and effective for you.

© Copyright Merative 2023 Information is for End User’s use only and may not be sold, redistributed or otherwise used for commercial purposes.

Learn more about Acute Rash

Treatment options

• Medications for Eczema
• Medications for Urticaria

Care guides

• Poison Ivy
• Rash in Children
• Viral Exanthem

Symptoms and treatments

• Eczema
• Hives (Urticaria)

Medicine.com guides (external)

• Eczema (atopic dermatitis) Guide

Further information

Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.

Medical Disclaimer

Rubella in children and adults: symptoms and treatment

Rubella is treated by a pediatrician

Rubella is an infection that mainly affects the skin and lymph nodes.

The disease is caused by the rubella virus (for a long time it was believed that rubella is a mild variant of the course of measles, but later science learned to distinguish these diseases), it is transmitted by airborne droplets, through particles of the saliva of a sick person sneezing. In addition, the rubella virus can be transmitted transplacentally, that is, from a pregnant woman to her fetus.

Usually rubella is quite mild, rarely causes complications, although rubella encephalitis and even fatal cases occur. The main medical hazard of rubella is infection of pregnant women, since the rubella virus can cause congenital rubella syndrome in the fetus.

Before the rubella vaccine became available in 1969, epidemics of the disease occurred every 6–9 years, usually in children aged 5–9 years, along with many cases of congenital rubella (that is, deafness, heart defects, and other physical defects in newborns whose mothers had rubella during pregnancy). Thanks to mass immunization, cases of rubella and congenital rubella syndrome have become incomparably smaller.

Most cases of rubella currently do not occur in children, but in young unvaccinated adults.

Symptoms

The illness usually begins with one to two days of mild fever (up to 38°C) and swollen, painful lymph nodes, usually in the back of the neck or behind the ears. A pale pink spotted rash then appears on the face and spreads downward. As it spreads to the lower parts of the body, the face is usually already cleared.

A rubella rash is often the first sign of illness that a parent notices. It may look like many other viral rashes, appearing as pink or light red spots that may coalesce to form patches of uniform color. The rash may itch and last up to 3 days. When the rash disappears, small-lamellar peeling may remain in its place.

Other symptoms of rubella (more common in adolescents and adults) may include headache, loss of appetite, mild conjunctivitis (inflammation of the lining of the eyelids and eyeballs), nasal congestion or discharge, swollen lymph nodes elsewhere in the body.

If a pregnant woman gets rubella, she may develop congenital rubella syndrome, with devastating consequences for the developing fetus. Children infected with rubella before birth are at risk of growth failure, intellectual defects, heart and eye defects, deafness, and problems with the liver, spleen, and bone marrow.

Rubella rash usually lasts 3 days. Lymph nodes may remain swollen for a week or more, and joint pain may last over 2 weeks. Children with rubella usually recover within 1 week, but adults may take longer.

Contagiousness

The rubella virus is spread from person to person through tiny droplets of fluid from the nose and throat when sneezing and coughing. People with rubella are most contagious 1 week or more before the rash appears and up to 1 week after the rash appears. Someone who is infected but has no symptoms can also spread the virus.

Infants with congenital rubella syndrome can shed the virus in their urine and nasal mucus for a year or more, which means they can infect unvaccinated people.

Prevention

Rubella can be prevented with a vaccine. This vaccination is included in the calendars of all countries, is crucial for curbing the spread of the disease and preventing birth defects in the fetus caused by congenital rubella syndrome.

The first dose of the vaccine is usually given to children at 12 months of age as part of routine measles, mumps, and rubella immunizations. The second dose is usually administered at age 6 years. It is acceptable to give a second dose of the vaccine 6 months after the first, or even 1 month if we know that the child is at increased risk of contracting the disease.

Rubella vaccine should not be given to pregnant women or women who plan to become pregnant within 1 month of vaccination. If you’re thinking about getting pregnant, make sure you’re immune to rubella by doing a blood test or finding records of your vaccines (you should have two doses of the vaccine). If there is no immunity, you should be vaccinated at least 1 month before pregnancy.

Treatment for rubella in children and adults

There is no cure for rubella. All we can do is relieve the symptoms and watch for complications.

Rubella cannot be treated with antibiotics!

Any pregnant woman who has had rubella should contact her obstetrician immediately.

You can give your child paracetamol or ibuprofen to relieve discomfort after the vaccine. Remember that you should never give aspirin to a child with a viral disease, as its use in such cases is associated with the development of Reye’s syndrome.

Author:

Butriy Sergey Alexandrovich
pediatrician

Publication date: April 30, 2021

Update date: March 21, 2023

When it comes to rashes in children, a distinction should be made between sudden rashes and rashes that occur intermittently or last longer than two weeks. Even many years of medical practice is not enough to establish the etiology of the rash. As a rule, the diagnosis of the disease that caused the rash occurs on the basis of clinical tests. Therefore, one should not make hasty conclusions about the disease in a child based only on a description of the symptoms of the disease. Incorrect diagnosis and self-treatment of the disease can cause serious consequences for the health of the child.

Sudden rash in a child

Viral infections often cause rashes in children. Often, in addition to the rash, the disease is not accompanied by any other symptoms, and if it were not for the rash, then the child could not even suspect the disease. The rash can be caused by dozens of viral agents. Except for a few, most of them are almost the same on the skin. Usually these are slightly swollen pink or red spots. Simultaneously with the rash, the child may experience symptoms of a cold or gastrointestinal upset.
If a child gets measles, the rash begins on the face and behind the ears, and after that the rash spreads to the skin of the trunk, arms and legs. The rash has the appearance of red spots with uneven edges, which have a tendency to grow and merge into large spots. Usually, a few days before the rash, the child develops symptoms of a cold, inflammation of the eyes also occurs, and white spots appear in the mouth. The measles rash persists for several days, after which it disappears.
The rash in a child with rubella is similar to the symptoms of measles, but they mainly affect the torso of children. The child feels unwell with catarrhal symptoms, there is an increase in the cervical lymph nodes. Sometimes the rubella rash has a non-specific appearance, so it is impossible to visually establish the diagnosis of rubella.
Chickenpox is characterized by a rash on the body of small transparent blisters, which burst after 2-3 days and scabs form in their place. The blisters are very itchy, which may be the only severe symptom of the disease. Blistering occurs in the first 3-4 days, it takes up to 10 days for all scabs to dry.
Roseola baby is caused by a virus and is quite common. The disease is accompanied by a depressed state of the child, fever, cold symptoms. After a sudden onset of a rash occurs, the child’s condition improves significantly.
Scarlet fever is a bacterial infection caused by streptococcus, which is also the cause of a sore throat. The disease is characterized by a sore throat, swollen and inflamed tonsils are revealed on examination, and pus in the throat may be present. Rashes in the form of small red spots occur on the child’s torso, the child’s cheeks become reddened with simultaneous blanching of the skin around the lips. The tongue becomes inflamed or covered with a white coating. The condition of the child in some cases is very serious.
Meningitis may appear as small purple or red patches that rise slightly above the child’s skin. The disease is dangerous and requires urgent medical attention. Small purple or red spots around the eyes or on the skin of the child’s face may appear after a severe coughing fit or due to constipation. In fact, these are tiny hemorrhages formed when the body is overstressed.
Allergies are a common cause of skin rashes. A rash can appear as a result of a food, drug, contact allergic reaction. Sometimes an allergic rash resolves with difficulty breathing, swelling of the mucous membranes and itching of the skin and affects most of the skin, although the rash can be localized. As a rule, after the cause of the allergy is eliminated, the skin rash disappears after a few days.
Urticaria is characterized by an itchy rash that comes on quickly and goes away just as quickly.
Scabies is a skin disease caused by a subcutaneous mite of the arachnid genus, accompanied by severe itching. Under the skin, traces of passages that appeared during the life of the tick can be distinguished.

Persistent rash in a child

Eczema (dermatitis) is one of the most common skin diseases, which is accompanied by a skin rash. With eczema, the skin is dry and inflamed. In a severe form of the disease, reddening of the skin can occur, after which it exfoliates, which is accompanied by severe itching. Eczema often occurs on the front of the elbows, back of the knees, neck, face, and wrists. The predisposition to the disease is inherited. Infectious dermatitis is quite common. With this form of the disease, pathogenic bacteria enter the microcracks of the skin. Infection is facilitated by scratching the skin. The affected area is covered with a yellow crust, through which fluid is released. The disease may be accompanied by an increase in nearby lymph nodes.

Psoriasis (psoriasis) is more common in adults but can also affect adolescents. The etiology of the disease is poorly understood. Therapy of the disease consists in relieving the symptoms, there is still no medicine to completely get rid of psoriasis. The symptoms of the disease are similar to those of eczema, but unlike it, with psoriasis, round or oval purple (pink) spots with scaly skin often occur on the back of the elbows and the front of the knees.