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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A.I. Health Assistant Causes for Upper Leg Redness

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

  1. 1.Cellulitis

    Facial cellulitis is a skin infection that typically comes from other parts of the face like the mouth or the sinuses and needs antibiotic treatment. Symptoms can be pain, redness, warmth and swelling of the affected area.

    Dependent on severity of infection

    Rarity:
    Uncommon
    Top Symptoms:
    fever, chills, facial redness, swollen face, face pain
    Symptoms that always occur with cellulitis:
    facial redness, area of skin redness
    Urgency:
    Primary care doctor
  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.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

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

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  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:
    Ultra 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
  5. 5.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
  6. 6.Allergic Reaction to Poison Ivy / Oak / Sumac

    Plants of the Toxicodendron genus are found throughout the continental United States, and exposure to these plants is a leading cause of contact dermititis, a medical term used to describe irritation and itching of the skin.

    With treatment, symptoms should resolve from a few days to two weeks.

    Rarity:
    Common
    Top Symptoms:
    rash, itchy rash, red rash, skin changes on arm, stinging or burning rash
    Symptoms that always occur with allergic reaction to poison ivy/oak/sumac:
    itchy rash, rash
    Symptoms that never occur with allergic reaction to poison ivy/oak/sumac:
    fever
    Urgency:
    Self-treatment
  7. 7.Squamous Cell Carcinoma

    Squamous cells are the small, flat skin cells in the outer layer of the skin. Squamous cell carcinoma (SCC) a type of skin cancer that usually appears as a tiny, painless bump or patch. The most common spots for this cancer are the head (including scalp, lips, ears, and mouth), legs, and the backs of the hands and the arms.

    In most cases, excellent prognosis, and 95-98% of SCCs can be cured if treated early.

    Rarity:
    Uncommon
    Top Symptoms:
    worsening face redness, rough skin on the face, scabbed area of the face
    Urgency:
    Primary care doctor

Questions Your Doctor May Ask About Upper Leg Redness

  • Q.Do you have a rash?
  • 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?
  • Q.Did your symptoms start after you were exposed to nickel (commonly found in jean snaps, metal pens, paper clips, cigarettes, etc.)?

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:

    • 46% Less Than a Day
    • 25% Less Than a Week
    • 12% Over a Month
  • People who have experienced upper leg redness were most often matched with:

    • 66% Cellulitis
    • 16% Irritant Contact Dermatitis
    • 16% Allergic Contact Dermatitis of the Thigh
  • 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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