Read below about knee itch, including causes and common questions. Or get a personalized analysis of your knee itch 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.

A.I. Health Assistant

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Knee Itch Quiz

A.I. Health Assistant Causes for Knee Itch

The list below shows results from the use of our A.I. Health Assistant by Buoy users who experienced knee itch. This list does not constitute medical advice.

  1. 1.Eczema (Atopic Dermatitis)

    Eczema is a form of skin inflammation that causes skin to be dry, itchy, red, and irritated.

    This is a long-term, recurring condition but symptoms are manageable with care.

    Rarity:
    Common
    Top Symptoms:
    trouble sleeping, feeling itchy or tingling all over, dry skin, scalp itchiness, flexor surface rash
    Symptoms that never occur with eczema (atopic dermatitis):
    fever
    Urgency:
    Phone call or in-person visit
  2. 2.Allergic Contact Dermatitis of the Knee

    Allergic contact dermatitis is a condition in which the skin becomes irritated and inflamed following physical contact with an allergen. Common products known to cause allergic dermatitis include plants, metals, soap, fragrance, and cosmetics.

    1-2 days

    Rarity:
    Common
    Top Symptoms:
    knee redness, knee itch, scabbed area of the knee
    Symptoms that always occur with allergic contact dermatitis of the knee:
    knee redness
    Urgency:
    Self-treatment
  3. 3.Dermatofibroma

    Dermatofibroma (superficial benign fibrous histiocytoma) is a common cutaneous nodule of unknown etiology that occurs more often in women. Dermatofibroma frequently develops on the extremities (mostly the lower legs) and is usually asymptomatic, although pruritus and tenderness can be present

    Resolves with treatment

    Rarity:
    Rare
    Top Symptoms:
    small facial lump, pink or red facial bump, face itch, skin-colored facial bump, painful facial bump
    Urgency:
    Wait and watch

    Knee Itch Checker

    Take a quiz to find out why you’re having knee itch.

    Knee Itch Quiz
  4. 4.Insect Bite From a Chigger

    Chiggers are mites that feed on humans and animals only while they are larvae, or their infant form. People can contract chiggers when they contact infected grass. Chiggers feed for three to four days on a piece of skin, and secrete a fluid that causes intense itching.

    Once treated, the pain and inflammation should go away within days. Sometimes, itching may persist for several weeks due to what is called a delayed sensitivity reaction.

    Rarity:
    Rare
    Top Symptoms:
    lower leg itch, lower leg redness, knee itch, ankle itch, ankle redness
    Urgency:
    Phone call or in-person visit
  5. 5.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
  6. 6.Psoriasis

    Psoriasis is a skin disease that causes itchy or sore patches of thick, red skin with silvery scales. The patches mostly affect the elbows, knees, scalp, back, face, palms and feet.

    Psoriasis is a chronic condition. Often flare-ups come and go. In some cases, psoriasis goes away over time.

    Rarity:
    Uncommon
    Top Symptoms:
    itchy rash, red or pink, rough patch of skin, rash with well-defined border, painful rash, scaly rash
    Symptoms that never occur with psoriasis:
    fever, black-colored skin changes, brown-colored skin changes, blue-colored skin changes
    Urgency:
    Primary care doctor
  7. 7.Scabies

    Scabies is a highly contagious skin infection caused by mites that produce an itchy rash on the body.

    Rash and intense itching should subside within 2-4 days with treatment.

    Rarity:
    Rare
    Top Symptoms:
    vaginal itch or burning, vulvovaginal redness, feeling itchy or tingling all over, butt itch, elbow itch
    Urgency:
    Primary care doctor

Questions Your Doctor May Ask About Knee Itch

  • Q.Did you possibly brush into poison ivy, poison oak, or poison sumac?
  • Q.Any fever today or during the last week?
  • Q.Do you have a rash?
  • Q.Do you have skin changes anywhere that skin touches or rubs other skin (such as the back of the knee, inside of the elbow or wrist, or the armpit)?

If you've answered yes to one or more of these questions, try our knee itch symptom checker to find out more.

Knee Itch Quiz

Knee Itch Symptom Checker Statistics

  • People who have experienced knee itch have also experienced:

    • 14% Lower Leg Itch
    • 11% Upper Leg Itch
    • 6% Ankle Itch
  • People who have experienced knee itch had symptoms persist for:

    • 28% Less Than a Day
    • 26% Less Than a Week
    • 24% Over a Month
  • People who have experienced knee itch were most often matched with:

    • 66% Eczema (Atopic Dermatitis)
    • 33% Allergic Contact Dermatitis of the Knee
  • 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

Take a quiz to find out why you’re having knee itch

Knee Itch Quiz