Pictures, Types, Causes, and Treatment

Raised skin bumps are mostly harmless. They may present in various ways, from skin tags to keloids. Conditions like acne and chickenpox can also cause them. Seek medical help if your bumps resemble those caused by MRSA or skin cancer.

Raised skin bumps are very common, and in most cases, they’re harmless. They can result from a number of conditions, including:

• infections
• allergic reactions
• skin disorders
• skin cancer

Skin bumps can vary in appearance and number depending on the cause. They may be the same color as your skin or a different color. They may be itchy, large, or small. Some can be hard, while others can feel soft and movable.

Most skin bumps do not need treatment. However, you should speak with a doctor if your bumps are causing discomfort. You should also call a doctor if you’re concerned about any changes in your bumps or in the overall condition of your skin.

Many conditions can cause raised bumps to appear on the skin. Here’s a list of 25 possible causes.

Warning: Graphic images ahead.

Acne

• commonly located on the face, neck, shoulders, chest, and upper back
• breakouts on the skin composed of blackheads, whiteheads, pimples, or deep, painful cysts and nodules
• may leave scars or darken the skin if untreated

Read the full article on acne.

Cold sore

• red, painful, fluid-filled blister that appears near the mouth and lips
• affected area will often tingle or burn before the sore is visible
• may be accompanied by mild, flu-like symptoms, such as low fever, body aches, and swollen lymph nodes

Read the full article on cold sores.

Corns and calluses

• small, round circles of thickened skin with a painful, horn-like central area of hardened tissue
• commonly found on the tops and sides of the toes and on the soles of the feet
• caused by friction and pressure

Read the full article on corns and calluses.

Skin tags

• skin growths that can become up to half an inch long
• same color as your skin or slightly darker
• most likely caused by friction
• commonly found near the neck, armpits, breasts, groin, stomach, or eyelids

Read the full article on skin tags.

Nodule

• small to medium growth that may be filled with tissue, fluid, or both
• usually wider than a pimple and may look like a firm, smooth elevation under the skin
• usually harmless, but may cause discomfort if it presses on other structures
• nodules may also be located deep inside the body where you cannot see or feel them

Read the full article on nodules.

Impetigo

• common in babies and children
• irritating rash and fluid-filled blisters that pop easily and form a honey-colored crust
• rash is often located in the area around the mouth, chin, and nose

Read the full article on impetigo.

Molluscum contagiosum

• bumps that may appear in a patch of up to 20
• small, shiny, and smooth
• flesh-colored, white, or pink
• firm and dome-shaped with a dent or dimple in the middle

Read the full article on molluscum contagiosum.

Lipoma

• soft to the touch and moves easily if prodded with your finger
• small, just under the skin, and pale or colorless
• commonly located in the neck, back, or shoulders
• only painful if it presses on a nerve

Read the full article on lipoma.

Cyst

• slow-growing bump under the skin that has a smooth surface
• can be large or small and is usually painless
• typically not a problem unless it’s infected, very large, or growing in a sensitive area
• some grow deep inside your body where you can’t see or feel them

Read the full article on cysts.

Wart

• caused by many different types of a virus called human papillomavirus (HPV)
• may be found on the skin or mucous membranes
• may occur as one wart or in groups
• contagious and may be passed to others

Read the full article on warts.

Actinic keratosis

• typically less than 2 centimeters (cm), or about the size of a pencil eraser
• thick, scaly, or crusty skin patch
• appears on parts of the body that receive a lot of sun exposure (hands, arms, face, scalp, and neck)
• usually pink in color but can have a brown, tan, or gray base

Read the full article on actinic keratosis.

Basal cell carcinoma

• raised, firm, and pale areas that may resemble a scar
• dome-like, pink or red, shiny, and pearly areas that may have a sunk-in center, like a crater
• visible blood vessels on the growth
• easy bleeding or oozing wound that doesn’t seem to heal, or heals and then reappears

Read the full article on basal cell carcinoma.

Squamous cell carcinoma

• often occurs in areas exposed to ultraviolet (UV) radiation, such as the face, ears, and back of the hands
• scaly, reddish patch of skin that progresses to a raised bump and continues to grow
• growth that bleeds easily and doesn’t heal, or heals and then reappears

Read the full article on squamous cell carcinoma.

Melanoma

• the most serious form of skin cancer, more common in people with lighter skin tones
• mole anywhere on the body that has irregularly shaped edges, asymmetrical shape, and multiple colors
• mole that has changed color or gotten bigger over time
• usually larger than a pencil eraser

Read the full article on melanoma.

Boils

• bacterial or fungal infection of a hair follicle or oil gland
• can appear anywhere on the body but are most common on the face, neck, armpit, and buttock
• red, painful, raised bump with a yellow or white center
• may rupture and weep fluid

Read the full article on boils.

Bullae

• clear, watery, fluid-filled blister that is greater than 1 cm in size
• can be caused by friction, contact dermatitis, and other skin disorders
• if clear liquid turns milky, there might be an infection

Read the full article on bullae.

Contact dermatitis

• appears hours to days after contact with an allergen
• rash has visible borders and appears where your skin touched the irritating substance
• skin is itchy, red, scaly, or raw
• blisters that weep, ooze, or become crusty

Read the full article on contact dermatitis.

Cherry angioma

• common skin growth that can be found anywhere on the body but is most likely to be seen on the torso, arms, legs, and shoulders
• more common in people over age 30
• small, bright red circular or oval spots that may be raised or smooth and bleed if rubbed or scratched
• generally harmless but may require removal if they’re in problem areas

Read the full article on cherry angioma.

Keloids

• symptoms occur at the site of a previous injury
• lumpy or rigid area of skin that may be painful or itchy
• area is flesh-colored, pink, or red

Read the full article on keloids.

Keratosis pilaris

• common skin condition that’s most often seen on the arms and legs but might also occur on the face, buttocks, and torso
• often clears up on its own by age 30
• patches of skin that appear bumpy, slightly red, and feel rough
• may get worse in dry weather

Read the full article on keratosis pilaris.

Seborrheic keratoses

• common, harmless skin growth that is usually seen in older adults
• can be located anywhere on the body except for the palms of the hands and soles of the feet
• round, oval, dark-colored growth with a “stuck-on” appearance
• raised and bumpy with a waxy feel

Read the full article on seborrheic keratoses.

Chickenpox

• clusters of itchy, red, fluid-filled blisters in various stages of healing all over the body
• accompanied by fever, body aches, sore throat, and loss of appetite
• remains contagious until all blisters have crusted over

Read the full article on chickenpox.

MRSA (staph) infection

This condition is considered a medical emergency. Urgent care may be required.

• an infection caused by a type of Staphylococcus, or staph, bacteria that is resistant to many different antibiotics
• causes an infection when it enters through a cut or scrape on the skin
• skin infection that often looks like a spider bite, with a painful, raised, red pimple that may drain pus
• needs to be treated with powerful antibiotics and can lead to more dangerous conditions like cellulitis or blood infection

Read the full article on MRSA (staph) infection.

Scabies

• symptoms may take 4 to 6 weeks to appear
• extremely itchy rash that may be pimply, made up of tiny blisters, or scaly
• raised white or flesh-colored lines

Read the full article on scabies.

Strawberry nevus

• red or purplish raised mark, commonly located on the face, scalp, back, or chest
• appears at birth or in very young children
• gradually gets smaller or disappears as the child ages

Read the full article on strawberry nevus.

The most common causes of raised skin bumps are harmless and do not require medical treatment unless you have discomfort. Here are some of the possible reasons for raised skin bumps:

• Acne is the most common skin condition in the United States, according to the American Academy of Dermatology. It causes skin bumps that can range from very small and painless to large and painful. The bumps are usually accompanied by redness and swelling.
• Boils are infected hair follicles that look like red, raised bumps on the skin. They can be painful, but they eventually go away once they burst and release fluid.
• Bullae are raised, fluid-filled bumps that can result from friction, or conditions like contact dermatitis and chickenpox.
• Cherry angiomas are common skin growths that can form on most areas of the body. They develop when blood vessels clump together and create a raised, bright-red bump under or on the skin.
• Cold sores are red, fluid-filled bumps that form around the mouth or other areas of the face and can burst. They’re caused by a common virus called herpes simplex.
• Contact dermatitis is an allergic skin reaction that produces an itchy, red skin rash. The rash may consist of raised, red bumps that ooze, drain, or crust.
• Corns or calluses are rough, thickened areas of skin. They’re most often found on the feet and hands.
• Cysts are growths that contain fluid, air, or other substances. They develop under the skin in any part of the body. They feel like a small ball and can usually be moved around slightly.
• Keloids are smooth, raised growths that form around scars. They’re most commonly found on the chest, shoulders, and cheeks.
• Keratosis pilaris is a skin condition marked by an overgrowth of a protein called keratin. It causes small bumps around hair follicles on the body.
• Lipomas are collections of fatty tissue under the skin and are often painless. They usually form on the neck, back, or shoulders.
• Molluscum contagiosum are small, flesh-colored bumps with a dimple in the center that often form in all parts of the body. They can arise from skin-to-skin contact with someone affected with them.
• Nodules result from growth of abnormal tissue, and can appear on the skin in common areas like the armpits, groin, and head and neck region.
• Seborrheic keratoses are round, rough spots on the surface of the skin. They can affect many areas of the body, including the chest, shoulders, and back. They may be skin-colored, brown, or black.
• Skin tags are small, fleshy flaps of skin. They usually grow on the neck or in the armpits. They may be the same color as the skin or slightly darker.
• Strawberry nevus is a red birthmark also known as a hemangioma. They are most common in young children and usually disappear by age 10.
• Warts are raised, rough bumps caused by the human papillomavirus (HPV). They typically develop on the hands and feet. They may be skin-colored, pink, or slightly brown.

Less commonly, raised skin bumps are caused by more serious conditions that require treatment. Certain bacterial and viral infections cause bumps and will only get worse if they go undiagnosed and untreated. These serious conditions include:

• chickenpox, a common childhood virus characterized by red, itchy bumps that form all over the body
• impetigo, a bacterial skin infection common in young children that is highly contagious and results in reddish blisters that ooze and develop a honey-colored crust
• MRSA (staph) infection, an illness triggered by a staph bacteria that commonly lives on the skin, causing a swollen, painful bump with a white center
• scabies, a skin infestation caused by a tiny mite called Sarcoptes scabiei, producing an itchy, pimple-like rash

Other types of raised skin bumps can be caused by skin cancer. There are several types of skin cancer, all requiring medical management and treatment:

• Actinic keratosis is a precancerous skin condition characterized by scaly, crusty spots on areas of sun-exposed skin, such as hands, arms, or face. These spots are typically brown, gray, or pink. The affected area may itch or burn.
• Basal cell carcinoma is a form of cancer that affects the top layer of skin. It produces painful bumps that bleed in the early stages. The associated bumps appear on sun-exposed skin and may be discolored, shiny, or scar-like.
• Squamous cell carcinoma is a type of skin cancer that begins in the squamous cells. These cells make up the outermost layer of skin. The condition causes scaly, red patches and raised sores to develop on the skin. These abnormal growths often form in areas exposed to ultraviolet radiation.
• Melanoma is the least common but most serious form of skin cancer. It begins as an atypical mole. Cancerous moles are often asymmetrical, multi-colored, and large, with irregular borders. They can appear anywhere on the body.

Most skin bumps are harmless and aren’t cause for concern. However, you should see your doctor if:

• skin bumps change or worsen in appearance, or last for a long time
• you are in pain or they cause discomfort
• you don’t know the cause of the bumps
• you suspect you have an infection or skin cancer

Your doctor will perform a physical examination and inspect the skin bumps. Expect to answer questions about your bumps, medical history, and lifestyle habits.

Your doctor may also perform a skin biopsy to test if the skin bump is cancerous. This procedure involves taking a small sample of skin tissue from the affected area for analysis. Depending on the results, your doctor may refer you to a dermatologist or other specialist for further evaluation.

The Healthline FindCare tool can provide options in your area if you don’t already have a doctor.

Removal

Treatment for raised skin bumps depends on the underlying cause. Most of the common causes of skin bumps are harmless, so you probably won’t need treatment. However, if your skin bumps are bothering you, you might be able to have them removed for cosmetic reasons.

For example, a dermatologist can remove skin tags or warts by freezing them off. A dermatologist can also surgically remove certain skin bumps, including cysts and lipomas. Other bumps that are itchy or irritated may be treated with topical ointments and creams.

If your doctor finds that your skin bumps are cancerous or precancerous, they will most likely remove the bumps completely. You will also need to attend regular follow-up appointments so your doctor can check the area and make sure the cancer doesn’t come back.

Medication

In cases where additional medical treatment is required, your doctor will prescribe medications that can help eliminate your skin bumps and the underlying cause.

For a bacterial infection, such as MRSA, you may need antibiotics. For a viral infection, such as chickenpox, your doctor may recommend over-the-counter medications and home treatments. Some viral infections, such as herpes, can’t be cured. However, your doctor can give you medications to ease symptoms.

For most skin bumps, the long-term outlook is excellent. The majority of bumps are caused by harmless, temporary conditions that don’t require treatment. If skin bumps are caused by an infection or long-term condition, timely medical treatment should either clear it up or effectively ease the symptoms. The outlook is also good when skin cancer is caught early. However, frequent follow-ups will be necessary to ensure the cancer doesn’t return or grow. The outlook for more advanced forms of skin cancer varies with each situation.

Keratosis Pilaris (Chicken Skin): Pictures, Causes, and Treatment

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Keratosis pilaris happens when hair follicles become plugged up with dead skin cells, causing bumps.

Keratosis pilaris, sometimes called “chicken skin,” is a common skin condition that causes patches of rough-feeling bumps to appear on the skin. These tiny bumps or pimples are actually dead skin cells plugging hair follicles. They sometimes appear red or brown in color.

Keratosis pilaris is commonly found on the upper arms, thighs, cheeks, or buttocks. It isn’t contagious, and these bumps don’t usually cause any discomfort or itching.

This condition is known to worsen in the winter months when the skin tends to dry out and may also worsen during pregnancy.

There’s no cure for this harmless, genetic skin condition, but there are some ways to treat it or prevent it from getting worse. Keratosis pilaris will usually clear up naturally by the time you reach 30 years old.

Here’s everything you need to know about this skin condition.

The most notable symptom of keratosis pilaris is its appearance. The visible bumps appearing on the skin resemble that of goosebumps or the skin of a plucked chicken. For this reason, it’s commonly known as “chicken skin.”

The bumps can appear anywhere on the skin where hair follicles exist and, therefore, will never appear on the soles of your feet or palms of your hands. Keratosis pilaris is commonly found on the upper arms and thighs. In excess, it can extend to the forearms and lower legs.

Other symptoms associated with it include:

• slight pinkness or redness around bumps
• itchy, irritable skin
• dry skin
• bumps that feel like sandpaper
• bumps that can appear in different colors depending on skin tone (flesh-colored, white, red, pink, brown, or black)

Not sure if you have keratosis or psoriasis? We break down the differences here.

This benign skin condition is the result of a buildup of keratin, a hair protein, in the pores.

If you have keratosis pilaris, the keratin of your body hair gets clogged in the pores, blocking the opening of growing hair follicles. As a result, a small bump forms over where a hair should be. If you were to pick at the bump, you may notice a small body hair emerge.

The exact cause of keratin buildup is unknown, but doctors think it may be associated with skin conditions such as atopic dermatitis and genetic diseases.

Who can develop keratosis pilaris?

Chicken skin is common in women, children or teenagers, and those of Celtic ancestry, as well as those with:

• dry skin
• eczema
• ichthyosis
• hay fever
• obesity

Anyone can be susceptible to this skin condition, but it’s most common in children and teenagers. Keratosis pilaris often begins in late infancy or during adolescence. It typically clears up in one’s mid-20s, with most cases completely gone by the age of 30.

Hormonal changes can cause flare-ups during pregnancy and during puberty. Keratosis pilaris is most common in people with fair skin.

Keratosis pilaris is diagnosed based on medical history and a physical exam. A skin doctor, known as a dermatologist, can typically confirm the diagnosis just by looking at the affected area. Factors that go into the diagnosis include:

• your age
• what it looks like
• which areas it affects

No formal testing exists to confirm the diagnosis.

If you need help finding a dermatologist, then check out our FindCare tool here.

There’s no known cure for keratosis pilaris. It usually clears up on its own with age. There are some treatments you can try to alleviate the look of it, but keratosis pilaris is typically treatment-resistant. Improvement may take months, if the condition improves at all.

Dermatological treatments

Your dermatologist may recommend a moisturizing treatment to soothe itchy, dry skin and improve the skin’s appearance from the keratosis rash. Many over-the-counter and prescription topical creams can remove dead skin cells or prevent hair follicles from being blocked. A doctor or healthcare professional can determine the best treatment for you.

If you don’t already have a dermatologist, our Healthline FindCare tool can help you connect to physicians in your area.

Two common ingredients within moisturizing treatments are urea and lactic acid. Together, these ingredients help to loosen and remove dead skin cells and soften dry skin. Other treatment methods a dermatologist may suggest include:

• microdermabrasion, an intense exfoliating treatment
• chemical peels
• retinol creams

Be wary of the ingredients in these creams, though, and talk with a doctor before using them. Some prescription topical creams include acids that may cause negative side effects, including:

• redness
• stinging
• irritation
• dryness

There are also some experimental treatment options available, such as photopneumatic therapy and vascular laser treatment.

Keratosis pilaris isn’t preventable. But following a gentle skin care routine can help prevent flare-ups and minimize its appearance. For example, using an oil-free cream or ointment to moisturize your skin can help prevent the clogged pores that contribute to keratosis pilaris.

If you don’t like the look of your keratosis pilaris, there are some techniques you can try to treat it at home. Although the condition can’t be cured, self-care treatments can help minimize bumps, itching, and irritation.

• Take warm baths: Taking short, warm baths can help unclog and loosen pores. It’s important to limit your time in the bath, though, as longer wash times can remove the body’s natural oils.
• Exfoliate: Daily exfoliation can help improve the appearance of the skin. Dermatologists recommend gently removing dead skin with a loofah or pumice stone, which you can purchase online.
• Apply hydrating lotion: Lotions with alpha hydroxy acid such as lactic acids can hydrate dry skin and encourage cell turnover. Some dermatologists recommend products such as Eucerin Advanced Repair and AmLactin, which you can purchase online. Glycerin, found in most beauty supply stores, can also soften bumps, while rose water can soothe skin inflammation.
• Avoid tight clothes: Wearing tight clothes can cause friction that can irritate the skin.
• Use humidifiers: Humidifiers add moisture to the air in a room, which can maintain the moisture in your skin and prevent itchy flare-ups.

Keratosis pilaris, a skin condition often referred to as “chicken skin” due to its appearance, commonly affects people at a young age. While there’s no cure, it tends to go away on its own by the time you reach 30 years old.

In the meantime, certain steps can help you manage it. Work with a dermatologist to discover the best ways to treat it.

Read this article in Spanish.

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