Read below about red skin bump larger than 1/2 cm in diameter, including causes and common questions. Or get a personalized analysis of your red skin bump larger than 1/2 cm in diameter from our A.I. health assistant. At Buoy, we build tools that help you know what’s wrong right now and how to get the right care.

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A.I. Health Assistant Causes for Red Skin Bump Larger Than 1 / 2 Cm in Diameter

The list below shows results from the use of our A.I. Health Assistant by Buoy users who experienced red skin bump larger than 1/2 cm in diameter. This list does not constitute medical advice.

  1. 1.Non - Specific Dermatitis (Skin Inflammation)

    Dermatitis is the inflammation ("-itis") of the skin ("derma" is a layer of the skin). It can be caused by any number of causes, from allergies to infections to autoimmune issues. Dermatitis of Normal Variation (also called, "NOS") means that all of those other causes of your rash have been ruled out. This is very common.

    1-2 days

    Rarity:
    Common
    Top Symptoms:
    red rash, itchy rash, painful rash
    Symptoms that always occur with non-specific dermatitis (skin inflammation):
    red rash
    Urgency:
    Self-treatment
  2. 2.Irritant Contact Dermatitis

    Contact dermatitis is a condition in which the skin becomes red, sore, or inflamed after direct contact with a substance. This condition most often affects skin of the hands, and may occur after repeated and prolonged exposure to substances such as water, detergents (soaps, bleach), solvents (such as gasoline), acids, powders, dust, and soil. The onset of the skin reaction is usually within 48 hours of coming in contact with the substance.

    1-2 days.

    Rarity:
    Common
    Top Symptoms:
    rash with well-defined border, itchy rash, red or pink, rough patch of skin, painful rash, red rash
    Symptoms that always occur with irritant contact dermatitis:
    rash with well-defined border
    Symptoms that never occur with irritant contact dermatitis:
    fever, black-colored skin changes, brown-colored skin changes, blue-colored skin changes
    Urgency:
    Self-treatment
  3. 3.Skin Abscess

    A skin abscess is an infection of the deeper skin that's typically due to bacteria seen on the skin. Recently, infections are more frequently caused by Staph. Aureus (puts the "staph" in "staph infections"), which is dangerous and requires treatment.

    Good prognosis with treatment

    Rarity:
    Common
    Top Symptoms:
    rash with bumps or blisters, red rash, red skin bump larger than 1/2 cm in diameter, pus-filled rash, rash
    Symptoms that always occur with skin abscess:
    rash with bumps or blisters
    Urgency:
    Primary care doctor
  4. 4.Non - Specific Skin Rash

    A rash is an area of irritated or swollen skin. Often, rashes are unidentifiable and some variation of normal. For example, scratching one's arm causes it to turn red (which is caused by mast cells releasing chemicals into the local area), but that's completely normal.

    1-2 days

    Rarity:
    Common
    Top Symptoms:
    rash
    Symptoms that always occur with non-specific skin rash:
    rash
    Urgency:
    Wait and watch
  5. 5.Mole

    Moles are growths on the skin. They happen when pigment cells in the skin, called melanocytes, grow in clusters.

    Indefinite

    Rarity:
    Uncommon
    Top Symptoms:
    eye bump unchanging in size, small eye lump, black or brown eye bump, eye bump's smooth border
    Symptoms that always occur with mole:
    black or brown eye bump, eye bump unchanging in size
    Urgency:
    Wait and watch

    Red Skin Bump Larger Than 1 / 2 Cm in Diameter Checker

    Take a quiz to find out why you’re having red skin bump larger than 1/2 cm in diameter.

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  6. 6.Pyogenic Granuloma (a Common, Benign Skin Change)

    Pyogenic granulomas are small, raised, red bumps on the skin. The bumps have a smooth surface and may be moist. They bleed easily because of the high number of blood vessels at the site. They are always benign.

    Resolves with treatment

    Rarity:
    Rare
    Top Symptoms:
    constant skin changes, light red or pink bump on skin, red skin bump larger than 1/2 cm in diameter, growing bump or blister, glistening, small (<1/2 cm) skin bump
    Symptoms that always occur with pyogenic granuloma (a common, benign skin change):
    constant skin changes
    Urgency:
    Wait and watch
  7. 7.Keratoacanthoma (a Common, Benign Skin Change)

    Keratoacanthomas are rapidly growing lesions that occur primarily on sun-exposed skin in older persons. The majority of lesions involve the face and upper extremities, although they frequently occur on the lower extremities, especially in women.

    Resolves with treatment

    Rarity:
    Uncommon
    Top Symptoms:
    itchy rash, rash on sun-exposed areas, red skin bump larger than 1/2 cm in diameter, skin-colored rash, skin-colored, large (>1/2 cm) bump
    Symptoms that never occur with keratoacanthoma (a common, benign skin change):
    fever
    Urgency:
    Wait and watch
  8. 8.Boil (Furuncle)

    Boils are infections of a hair follicle that creates a small pocket of inflammation full of pus. It's typically caused by a common bacteria called S. Aureus.

    5-10 days

    Rarity:
    Uncommon
    Top Symptoms:
    pink or red facial bump, small facial lump, painful facial bump, marble sized facial lump, constant skin changes
    Symptoms that always occur with boil (furuncle):
    pink or red facial bump
    Symptoms that never occur with boil (furuncle):
    fever
    Urgency:
    Self-treatment
  9. 9.Mosquito Bite

    Mosquito bites are very common. They often cause itchiness and redness.

    Usually clears up within a week.

    Rarity:
    Common
    Top Symptoms:
    mosquito bite
    Symptoms that always occur with mosquito bite:
    mosquito bite
    Symptoms that never occur with mosquito bite:
    fever, muscle aches, vomiting, loss of appetite
    Urgency:
    Self-treatment
  10. 10.Non - Specific Insect Bite

    Insect bites are very common. The saliva given off during the bit can sometimes cause dangerous allergic reactions that affect your ability to breathe. However, the vast majority of insect bites have no adverse effects besides the inflammation where the bite occurred.

    1 week

    Rarity:
    Common
    Urgency:
    Self-treatment

Questions Your Doctor May Ask About Red Skin Bump Larger Than 1 / 2 Cm in Diameter

  • Q.Any fever today or during the last week?
  • Q.What color is the skin change?
  • Q.Is your rash raised or rough when you run your hand over the area of skin?
  • Q.Have you been feeling more tired than usual, lethargic or fatigued despite sleeping a normal amount?

If you've answered yes to one or more of these questions, try our red skin bump larger than 1/2 cm in diameter symptom checker to find out more.

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Red Skin Bump Larger Than 1 / 2 Cm in Diameter Symptom Checker Statistics

  • People who have experienced red skin bump larger than 1/2 cm in diameter have also experienced:

    • 4% Feeling Itchy or Tingling All Over
    • 4% Vaginal Itch or Burning
    • 2% Armpit Pain
  • People who have experienced red skin bump larger than 1/2 cm in diameter had symptoms persist for:

    • 29% Over a Month
    • 27% Less Than a Week
    • 25% Less Than a Day
  • People who have experienced red skin bump larger than 1/2 cm in diameter were most often matched with:

    • 66% Skin Abscess
    • 16% Non - Specific Dermatitis (Skin Inflammation)
    • 16% Irritant Contact Dermatitis
  • Source: Aggregated and anonymized results from visits to the Buoy AI health assistant (check it out by clicking on “Take Quiz”).

A.I. Health Assistant

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