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Learn about your knee redness, including causes and common questions. Or get a personalized analysis of your knee redness 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.

Knee Redness Checker

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

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Your Knee Redness May Also be Known as:
Flushed knee
Flushed leg
Knee blushing
Knee flushing
Leg blushing
Leg flushing
Leg redness
Red knee
Red leg

Top 5 Knee Redness Causes

  1. 1.Non - Specific Knee 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.

    At this time, you do not need treatment for this rash. If it worsens, you may need to consult a physician.

    Rarity:
    Common
    Top Symptoms:
    knee redness
    Symptoms that always occur with non-specific knee rash:
    knee redness
    Urgency:
    Wait and watch
  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.

    You can safely treat this condition on at home. The main treatment for this disease is to avoid the substance that triggers the skin inflammation. Moisturizer can also be helpful to provide relief for your inflamed skin.

    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 Redness Checker

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

    Take a quiz
  3. 3.Skin Infection of the Knee

    Cellulitis is an infection of the skin and tissues underneath it. It is most commonly caused by Group A strep and typically enters the body through a break in the skin.

    You should go to your primary care doctor tomorrow. There, he or she will inspect your skin and determine if antibiotics are necessary.

    Rarity:
    Uncommon
    Top Symptoms:
    fever, knee pain, knee redness, knee injury, painful knee swelling
    Symptoms that always occur with skin infection of the knee:
    knee redness
    Urgency:
    Primary care doctor
  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.

    You should go to a retail clinic to be treated, as household remedies aimed at killing the mite are unlikely to be effective. The infected area should be kept clean with soap and water. A hydrocortisone cream or local anesthetic may be helpful to reduce the itching. You should avoid scratching the wounds!

    Rarity:
    Rare
    Top Symptoms:
    lower leg itch, constant skin changes, itchy rash, knee itch, lower leg redness
    Urgency:
    Phone call or in-person visit
  5. 5.Necrotizing Fasciitis of the Leg

    Necrotizing fasciitis is a potentially life threatening skin condition stemming from the infection of a wound or injury. If left untreated, it can spread to body parts surrounding the infection changing the color of the skin and degrading the tissue underneath. This can result in muscle, tissue or limb loss and a severe body-wide response to the infection.

    You should visit your local emergency room where blood tests can be run and a consultation can be made by a skin specialist. If caught early, antibiotics, cleaning, and a stay in the hospital can help control the infection. If serious, additionally procedures may be required. It is important to get treatment due to the possibility of this becoming a serious, life-threatening condition.

    Rarity:
    Rare
    Top Symptoms:
    nausea, vomiting, fever, diarrhea, chills
    Symptoms that always occur with necrotizing fasciitis of the leg:
    leg skin changes
    Urgency:
    Hospital emergency room

Questions Your Doctor May Ask About Knee Redness

  • Q.Is your knee redness getting better or worse?
  • Q.Do you have a rash?
  • Q.How red is your knee?
  • Q.Any fever today or during the last week?

If you've answered yes to one or more of these questions, check our knee redness symptom checker.

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Knee Redness Symptom Checker Statistics

  • People who have experienced knee redness have also experienced:

    • 8% Lower Leg Redness
    • 6% Knee Pain
    • 4% Foot Redness
  • People who have experienced knee redness had symptoms persist for:

    • 41% Less Than a Week
    • 35% Less Than a Day
    • 11% Two Weeks to a Month
  • People who have experienced knee redness were most often matched with:

    • 37% Non - Specific Knee Rash
    • 37% Skin Infection of the Knee
    • 25% Allergic Contact Dermatitis of the Knee

Knee Redness Checker

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

Take a quiz