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.

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4 Potential Knee Itch Causes

  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

    Knee Itch Checker

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  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:
    skin-colored knee bump, knee itch, marble-size knee lump, small knee lump, pink or red knee bump
    Urgency:
    Wait and watch
  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

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.

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Knee Itch Symptom Checker Statistics

  • People who have experienced knee itch have also experienced:

    • 15% Lower Leg Itch
    • 13% Upper Leg Itch
    • 7% Ankle Itch
  • People who have experienced knee itch had symptoms persist for:

    • 28% Less Than a Day
    • 26% Less Than a Week
    • 23% Over a Month
  • People who have experienced knee itch were most often matched with:

    • 58% Eczema (Atopic Dermatitis)
    • 21% Allergic Contact Dermatitis of the Knee
    • 19% Dermatofibroma
  • Source: Aggregated and anonymized results from visits to the Buoy AI health assistant (check it out by clicking on “Take Quiz”).

Disclaimer: The article does not replace an evaluation by a physician. Information on this page is provided as an information resource only, and is not to be used or relied on for any diagnostic or treatment purposes.

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