Read below about upper leg redness, including causes and common questions. Or get a personalized analysis of your upper leg 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.

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4 Potential Upper Leg Redness Causes

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.

  1. 1.Non - Specific Thigh 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:
    upper leg redness
    Symptoms that always occur with non-specific thigh rash:
    upper leg redness
    Urgency:
    Wait and watch
  2. 2.Allergic Contact Dermatitis of the Thigh

    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:
    upper leg itch, upper leg redness, scabbed area of the upper leg
    Symptoms that always occur with allergic contact dermatitis of the thigh:
    upper leg redness
    Urgency:
    Self-treatment

    Upper Leg Redness Checker

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  3. 3.Cellulitis

    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.

    Dependent on severity of infection

    Rarity:
    Uncommon
    Top Symptoms:
    fever, upper leg pain, upper leg redness, painful upper leg swelling, upper leg injury
    Symptoms that always occur with cellulitis:
    upper leg redness, area of skin redness
    Urgency:
    Primary care doctor
  4. 4.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.

    1-6 weeks.

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

Questions Your Doctor May Ask About Upper Leg Redness

  • Q.Do you have a rash?
  • Q.Did you possibly brush into poison ivy, poison oak, or poison sumac?
  • Q.Is the red area flaky and rough to the touch?
  • Q.Did your symptoms start after you were exposed to glues, fragrances, preservatives, hair dyes, soaps, detergents, or other common household chemicals?

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

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Upper Leg Redness Symptom Checker Statistics

  • People who have experienced upper leg redness have also experienced:

    • 7% Lower Leg Redness
    • 5% Knee Redness
    • 4% Foot Redness
  • People who have experienced upper leg redness had symptoms persist for:

    • 45% Less Than a Day
    • 25% Less Than a Week
    • 14% Over a Month
  • People who have experienced upper leg redness were most often matched with:

    • 40% Non - Specific Thigh Rash
    • 31% Allergic Contact Dermatitis of the Thigh
    • 28% Cellulitis
  • Source: Aggregated and anonymized results from visits to the Buoy AI health assistant (check it out by clicking on “Take Quiz”).

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