Bumps on Skin

Bumps on Skin Symptoms & Signs

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Symptoms & Signs

People often describe localized swollen areas on, or under, the skin as lumps or bumps. While bumps on, or under, the skin may result from conditions that give rise to a skin rash, many other conditions can result in solitary raised lumps on the skin. Infections, tumors, and the body's response to trauma or injury can all lead to lumps or bumps that appear to be located on or underneath the skin.

Depending upon the cause, skin lumps or bumps may vary in size and be firm or soft to the touch. The overlying skin may be reddened or ulcerated. Skin bumps may or may not be painful or tender, depending upon the cause of the lesions.

Medically Reviewed by a Doctor on 7/15/2014

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REFERENCE:

Fauci, Anthony S., et al. Harrison's Principles of Internal Medicine. 17th ed. United States: McGraw-Hill Professional, 2008.

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Causes of Bumps on Skin
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      • What is acne?
      • What causes acne?
      • What other skin conditions can mimic acne?
      • When should someone start acne treatment?
      • What can people do to get rid of their acne?
      • What are other things you can do for acne? Are there any home remedies for acne?
      • What is a good basic skin regimen?
      • How does a doctor treat acne? Is it possible to remove acne scars?
      • How would you summarize current-day acne treatment?
    • Actinic Keratosis Actinic keratoses are rough, scaly patches of skin that are considered precancerous and are due to sun exposure. Prevention is to...learn more »
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      • Actinic keratosis facts
      • What is an actinic keratosis, and what does it look like?
      • Who is at risk for an actinic keratosis?
      • Where on the body do actinic keratoses typically occur?
      • What is the significance of an actinic keratosis?
      • How is an actinic keratosis diagnosed?
      • How is an actinic keratosis treated?
      • What happens after an actinic keratosis is treated?
    • Anthrax Anthrax is a deadly infectious disease that may be transmitted to humans by infected animals or by biological warfare. There are...learn more »
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      • Anthrax facts
      • What is anthrax? Is anthrax contagious?
      • What causes anthrax?
      • How is anthrax contracted?
      • How common is anthrax? What are risk factors for anthrax infection?
      • How long is the incubation period with anthrax?
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      • What specialists treat anthrax?
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      • What is the prognosis for anthrax infections?
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      • Atopic dermatitis facts
      • What is atopic dermatitis?
      • What is the difference between atopic dermatitis and eczema?
      • How common is atopic dermatitis?
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      • What are atopic dermatitis symptoms and signs?
      • Can atopic dermatitis affect the face?
      • What are the stages of atopic dermatitis?
      • How do physicians diagnose atopic dermatitis?
      • What factors can aggravate atopic dermatitis?
      • What are skin irritants in patients with atopic dermatitis?
      • What are allergens?
      • What are aeroallergens?
      • What is the treatment for atopic dermatitis?
      • What is the prognosis of atopic dermatitis?
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    • Birthmark Birthmarks and other abnormal skin pigmentation is caused by the body's inability to produce enough melanin. Abnormal skin...learn more »
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      Birthmark Article
      • Birthmark facts
      • What is a birthmark?
      • What are the different types of birthmarks?
      • What are the characteristics of pigmented birthmarks?
      • What are the characteristics of vascular birthmarks?
      • What causes birthmarks?
      • Are any symptoms and signs associated with birthmarks?
      • What disorders are associated with birthmarks?
      • Can skin damage during delivery produce a birthmark?
      • Is it possible to remove or fade birthmarks?
      • Does insurance cover the cost of birthmark removal?
      • What is the treatment for birthmarks?
      • What is the prognosis of birthmarks?
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    • Bug Bites and Stings Bug bites and stings have been known to transmit insect-borne illnesses such as West Nile virus, Rocky Mountain spotted fever,...learn more »
      In This Article
      Bug Bites and Stings Article
      • Bug bites and stings facts*
      • Bug bites and stings introduction
      • What can I do to keep insects away?
      • What's the proper way to use insect repellent?
      • What's the best way to remove a bee stinger?
      • What should I do if I find a tick on me or my child?
      • What can be done for itching and pain from bites and stings?
      • When is medical attention needed?
      • Where can I find more information on bug bites and stings?
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    • Chickenpox (Varicella) Chickenpox (chicken pox) is a contagious childhood disease caused by the varicella-zoster virus. Symptoms have an incubation...learn more »
      In This Article
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      • Chickenpox facts
      • What is chickenpox? What causes chickenpox?
      • How does chickenpox spread?
      • What are chickenpox symptoms and signs?
      • What are treatment options for chickenpox?
      • What are the possible complications of chickenpox?
      • Can chickenpox be prevented with a vaccine?
    • Contact Dermatitis Contact dermatitis is a rash that occurs after exposure to an irritant. It can be allergic. Symptoms include a red, elevated rash...learn more »
      In This Article
      Contact Dermatitis Article
      • Contact dermatitis facts
      • What is contact dermatitis?
      • What causes contact dermatitis?
      • What are risk factors for contact dermatitis?
      • What are contact dermatitis symptoms and signs?
      • How is contact dermatitis diagnosed?
      • What is the treatment for contact dermatitis?
      • What is the prognosis of contact dermatitis?
      • Can contact dermatitis be prevented?
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    • Cyst Cysts are sac-like structures that may be filled with gas, liquid, or solid materials. Cysts may produce symptoms and signs...learn more »
      In This Article
      Cyst Article
      • Cyst facts
      • What is a cyst?
      • What are the different types of cysts?
      • What causes a cyst?
      • What are risk factors for a cyst?
      • What are cyst symptoms and signs?
      • What types of doctors treat cysts?
      • How do physicians diagnose a cyst?
      • What is the treatment for a cyst?
      • What are home remedies for cysts?
      • What is the prognosis of a cyst?
      • Is it possible to prevent a cyst?
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      • What is erythema nodosum?
      • What causes erythema nodosum?
      • What are the signs and symptoms of erythema nodosum?
      • How is erythema nodosum diagnosed?
      • Can erythema nodosum be confused with other conditions?
      • How is erythema nodosum treated?
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      In This Article
      Insect Sting Allergies Article
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      • What are stinging insects?
      • What types of insect sting reactions occur?
      • What are signs and symptoms of insect sting allergies?
      • Who is at risk for insect sting allergies?
      • What tests do doctors use to diagnose an insect sting allergy?
      • What specialists treat insect sting allergies?
      • What is the treatment for a severe allergic reaction?
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      • How can I avoid insect stings?
      • What can I do about becoming immune to insect allergy?
      • What is the prognosis for an insect sting allergy?
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      Is Eczema Contagious? Article
      • What is eczema?
      • Is eczema contagious?
      • When does eczema appear? and how will I know I have the disease?
      • How does eczema spread?
      • Is there a cure for eczema?
      • When should someone seek medical care for eczema?
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      In This Article
      Is Impetigo Contagious? Article
      • What is impetigo?
      • Is impetigo contagious?
      • How will I know if I am infected with impetigo? What is the incubation period for impetigo?
      • How does impetigo spread?
      • How will I know when someone is cured of impetigo? How long is the contagious period for impetigo?
      • When should I contact a medical caregiver about impetigo?
    • Is Leprosy (Hansen's Disease) Contagious? Leprosy is an infection caused by Mycobacterium leprae. Leprosy is only mildly contagious and is transmitted via frequent contact...learn more »
      In This Article
      Is Leprosy (Hansen's Disease) Contagious? Article
      • What is leprosy?
      • Is leprosy contagious?
      • What is the incubation period for leprosy?
      • How will I know if someone has leprosy?
      • How is leprosy transmitted?
      • How will I know someone is cured of leprosy?
      • When should I contact a medical caregiver about leprosy?
    • Jock Itch Jock itch is an itchy red rash that appears in the groin area. The rash may be caused by a bacterial or fungal infection. People...learn more »
      In This Article
      Jock Itch Article
      • Jock itch facts
      • What is jock itch? What does jock itch look like?
      • What causes jock itch?
      • Who gets jock itch?
      • What are jock itch symptoms and signs?
      • Does jock itch affect the entire body?
      • How is jock itch diagnosed?
      • Which physicians diagnose and treat jock itch?
      • Is jock itch curable? Is jock itch contagious?
      • What are possible complications of jock itch?
      • What is the treatment for jock itch?
      • What home remedy can I use for jock itch?
      • What holistic jock itch treatments are available?
      • How do I treat fungal jock itch?
      • How do I treat bacterial jock itch?
      • How is itching from jock itch treated?
      • What is the best drug for jock itch?
      • Why is my groin still discolored?
      • What is the prognosis with jock itch?
      • When should someone call a doctor about jock itch?
      • Is it possible to prevent jock itch?
    • Keloid A keloid is a scar that doesn't know when to stop. When the cells keep on reproducing, the result is an overgrown (hypertrophic)...learn more »
      In This Article
      Keloid Article
      • What is a keloid?
      • What is the cause of keloids?
      • What are keloid risk factors?
      • In which area of the body are keloids most likely to appear?
      • What is the difference between a keloid and a hypertrophic scar?
      • Keloids and piercing
      • Is keloid removal necessary?
      • What are keloid symptoms and signs?
      • What types of doctors diagnose and treat keloids?
      • Are there home remedies for keloids?
      • What are the treatments for keloids?
      • Is keloid prevention possible?
      • What is the prognosis for keloids?
    • Keratosis Pilaris Keratosis pilaris (KP) is a common skin disorder in which small white or red bumps appear around hair follicles on the upper...learn more »
      In This Article
      Keratosis Pilaris Article
      • Keratosis pilaris (KP) facts
      • What is keratosis pilaris?
      • Who gets keratosis pilaris?
      • Does keratosis pilaris affect the entire body?
      • What causes keratosis pilaris?
      • What are the signs and symptoms of keratosis pilaris?
      • What types of doctors treat keratosis pilaris?
      • How do doctors diagnose keratosis pilaris?
      • Does diet have anything to do with keratosis pilaris?
      • Is keratosis pilaris curable?
      • Is keratosis pilaris contagious?
      • What conditions mimic keratosis pilaris?
      • Are there home remedies for keratosis pilaris?
      • What is the treatment for keratosis pilaris?
      • What are possible complications of keratosis pilaris?
      • What is the prognosis of patients with keratosis pilaris?
    • Lichen Planus Lichen planus is a common skin disease that features small, itchy pink or purple spots on the arms or legs. the abnormal areas on...learn more »
      In This Article
      Lichen Planus Article
      • Lichen planus facts
      • What is lichen planus?
      • What are causes and risk factors for lichen planus?
      • How is the rash of lichen planus different from that of most other common rashes?
      • What are lichen planus symptoms and signs?
      • What does lichen planus look like?
      • What physicians diagnose and treat lichen planus?
      • How is lichen planus diagnosed?
      • Are there home remedies for lichen planus?
      • What is the treatment for lichen planus?
      • What is the long-term prognosis of lichen planus??
      • Is it possible to prevent lichen planus?
    • Melanoma Melanoma is a type of skin cancer which begins in skin cells called melanocytes and affects more than 53,600 people in the United...learn more »
      In This Article
      Melanoma Article
      • Melanoma facts
      • What is melanoma?
      • What does melanoma look like? What are melanoma symptoms and signs?
      • What if the skin changes are rapid or dramatic?
      • What are the causes and risk factors for melanoma?
      • How can people estimate their level of risk for melanoma?
      • What are the types of melanoma?
      • What tests do health-care professionals use to diagnose melanoma?
      • What is the treatment for melanoma?
      • How do doctors determine the staging and prognosis (outlook) of a melanoma?
      • What is recurrent melanoma?
      • What is metastatic melanoma?
      • What are the signs of symptoms of metastatic melanoma?
      • What are the treatments for metastatic melanoma?
      • What are the survival rates for metastatic melanoma?
      • What methods are available to help prevent melanoma?
      • What research is being done on melanoma?
      • Where can people get more information about melanoma?
    • Melanoma Second Source article from Government...learn more »
    • Moles Moles are small skin growths that may appear flat or raised and are often tan, brown, black, reddish brown, or skin colored. They...learn more »
      In This Article
      Moles Article
      • Moles facts
      • What are moles?
      • What causes moles, and what are risk factors for developing moles?
      • What types of moles are there?
      • What are liver spots or age spots?
      • What are seborrheic keratoses?
      • Who is more prone to getting moles?
      • Does having more moles increase one's chance of getting melanoma?
      • Do moles ever disappear spontaneously?
      • Which skin cancers look like moles?
      • How can moles be prevented?
      • How can moles be treated? What are different types of mole removal?
      • Is there a blood test or X-ray to diagnose moles?
    • Molluscum Contagiosum Molluscum contagiosum is a skin disease that causes pink painless bumps on the skin. It typically resolves in six to 12 months....learn more »
      In This Article
      Molluscum Contagiosum Article
      • Molluscum contagiosum facts
      • What is molluscum contagiosum?
      • Is molluscum contagiosum contagious?
      • What is the incubation period for molluscum contagiosum?
      • How long does the infection with molluscum contagiosum last? When does a person become noncontagious?
      • What causes molluscum contagiosum?
      • What are risk factors for molluscum contagiosum?
      • What are molluscum contagiosum symptoms and signs?
      • How do physicians diagnose molluscum contagiosum?
      • What is the treatment for molluscum contagiosum?
      • What type of doctors treat molluscum contagiosum?
      • Are there any home remedies for molluscum contagiosum?
      • What is the prognosis of molluscum contagiosum?
      • Is it possible to prevent molluscum contagiosum?
    • MRSA MRSA (methicillin-resistant Staphylococcus aureus) bacteria causes skin infections with the following signs and symptoms:...learn more »
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      In This Article
      Psoriasis Article
      • Psoriasis facts
      • What is psoriasis?
      • What are psoriasis causes and risk factors?
      • What are the different types of psoriasis?
      • Can psoriasis affect my joints?
      • Can psoriasis affect only my nails?
      • What are psoriasis symptoms and signs? What does psoriasis look like?
      • How do health-care professionals diagnose psoriasis?
      • Eczema vs. psoriasis
      • How many people have psoriasis?
      • Is psoriasis contagious?
      • Is there a cure for psoriasis?
      • Is psoriasis hereditary?
      • What specialties of doctors treats psoriasis?
      • What is the treatment for psoriasis?
      • What creams, lotions, and home remedies are available for psoriasis?
      • Are psoriasis shampoos available?
      • What oral medications are available for psoriasis?
      • What injections or infusions are available for psoriasis?
      • Is there a psoriasis diet?
      • What about light therapy for psoriasis?
      • What is the long-term prognosis with psoriasis? What are complications of psoriasis?
      • Is it possible to prevent psoriasis?
      • What does the future hold for psoriasis?
      • Is there a national psoriasis support group?
      • Where can people get more information on psoriasis?
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      In This Article
      Rheumatoid Arthritis (RA) Article
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      • What is rheumatoid arthritis (RA)?
      • Rheumatoid arthritis vs. osteoarthritis
      • What are rheumatoid arthritis causes and risk factors?
      • What are complications of rheumatoid arthritis?
      • What are rheumatoid arthritis symptoms and signs?
      • How do physicians diagnose rheumatoid arthritis?
      • What are the stages of rheumatoid arthritis?
      • What is the treatment for rheumatoid arthritis? What types of medications treat RA?
      • "First-line" rheumatoid arthritis medications
      • "Second-line" or "slow-acting" rheumatoid arthritis drugs (disease-modifying anti-rheumatic drugs or DMARDs)
      • What are newer rheumatoid arthritis treatments?
      • Rheumatoid arthritis diet, exercise, home remedies, and alternative medicine
      • What about rheumatoid arthritis and pregnancy?
      • What is the prognosis for patients with rheumatoid arthritis?
      • What are tips for living with rheumatoid arthritis?
      • Is it possible to prevent rheumatoid arthritis?
      • What specialists treat rheumatoid arthritis (RA)?
      • What new information about RA has come from the 2015 national meeting of the American College of Rheumatology?
      • What research is being done on rheumatoid arthritis?
      • Where can people get additional information on rheumatoid arthritis?
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      In This Article
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      • Sarcoidosis facts
      • What is sarcoidosis?
      • What are causes and risk factors of sarcoidosis?
      • What are signs and symptoms of sarcoidosis?
      • Who gets sarcoidosis?
      • What do we know about sarcoidosis? Is sarcoidosis contagious or hereditary?
      • What are some things we don't know about sarcoidosis?
      • What types of doctors treat sarcoidosis?
      • What tests do health-care professionals use to diagnose sarcoidosis?
      • What do laboratory tests for sarcoidosis show?
      • What is the treatment for sarcoidosis?
      • What is the prognosis of sarcoidosis?
      • Is it possible to prevent sarcoidosis?
      • Where can a person find more information on sarcoidosis?
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      In This Article
      Scarlet Fever (Scarlatina) Article
      • Scarlet fever facts
      • What is scarlet fever?
      • What causes scarlet fever?
      • What is the incubation period for scarlet fever?
      • What are risk factors for scarlet fever?
      • What is the contagious period for scarlet fever?
      • What are scarlet fever symptoms and signs?
      • How do physicians diagnose scarlet fever?
      • What is the treatment for scarlet fever?
      • What are complications of scarlet fever?
      • What is the prognosis of scarlet fever? What are the long-term effects of scarlet fever?
      • Is it possible to prevent scarlet fever? Is there a scarlet fever vaccine?
    • Skin Cancer Skin cancers occur when skin cells undergo malignant transformations and grow into tumors. The most common types of skin cancer,...learn more »
      In This Article
      Skin Cancer Article
      • What is skin cancer?
      • What are the risk factors for skin cancer?
      • What causes skin cancer?
      • What are the different types of skin cancer?
      • What are the signs and symptoms of skin cancer?
      • When is a mole dangerous or high-risk for becoming a skin cancer?
      • What are the most common sites where skin cancer develops?
      • How is skin cancer diagnosed?
      • What is the staging for skin cancer?
      • What is the treatment for skin cancer?
      • What kinds of doctors treat skin cancer?
      • What is the prognosis for skin cancer?
      • Can skin cancer be prevented?
      • Sunscreen use and vitamin D
    • Skin Tag A skin tag is a small benign growth of skin that projects from the surrounding skin. Skin tags can vary in appearance (smooth,...learn more »
    • Sporotrichosis Sporotrichosis is a skin infection caused by a fungus called Sporothrix schenckii. The fungus, which may be present in sphagnum...learn more »
      In This Article
      Sporotrichosis Article
      • Sporotrichosis facts*
      • What is sporotrichosis?
      • What are symptoms and signs of sporotrichosis?
      • Who gets sporotrichosis?
      • How can people prevent sporotrichosis?
      • What are sources of sporotrichosis?
      • What tests do health-care professionals use to diagnose sporotrichosis?
      • What is the treatment and prognosis of sporotrichosis?
      • Statistics
    • Steroid Abuse Anabolic steroids are synthetic substances that are related to testosterone and promote skeletal muscle growth and the...learn more »
      In This Article
      Steroid Abuse Article
      • Anabolic steroid abuse facts
      • What are anabolic steroids?
      • Why do people abuse anabolic steroids?
      • How do people abuse anabolic steroids?
      • Are anabolic steroids addictive? What are the symptoms and signs of anabolic steroid abuse?
      • What are the psychological and physical side effects of anabolic steroid abuse?
      • How are anabolic steroid abuse and addiction diagnosed?
      • What is the treatment for anabolic steroid abuse and addiction?
      • Is it possible to prevent anabolic steroid abuse and addiction?
      • Where can I get more information on anabolic steroid abuse?
    • Swollen Lymph Nodes Lymph nodes help the body's immune system fight infections. Causes of swollen lymph nodes (glands) may include infection (viral,...learn more »
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Other Causes of Bumps on Skin


Symptoms & Signs A-Z List