Differential Diagnosis for Medial Thigh Rash Bilateral
- Single most likely diagnosis
- Contact dermatitis: This is a common condition that can occur due to irritation from clothing, soaps, or other substances that come into contact with the skin, especially in areas like the medial thigh where friction and moisture can exacerbate the condition.
- Other Likely diagnoses
- Eczema (atopic dermatitis): A chronic condition characterized by itchy, inflamed skin, which can appear anywhere on the body, including the medial thighs.
- Intertrigo: A type of rash that occurs in skin folds, such as the medial thighs, due to friction, moisture, and fungal or bacterial infections.
- Psoriasis: An autoimmune condition that speeds up the life cycle of skin cells, causing cells to build up rapidly on the surface of the skin, leading to scaling, redness, and itching, which can occur on the thighs.
- Do Not Miss (ddxs that may not be likely, but would be deadly if missed)
- Necrotizing fasciitis: A severe bacterial infection that affects the tissue beneath the skin and surrounding muscles and organs, which can start as a rash but quickly progresses to severe pain, swelling, and skin necrosis.
- Cellulitis: A bacterial skin infection that can cause redness, swelling, and pain, which, if left untreated, can lead to serious complications.
- Rare diagnoses
- Lichen planus: A rare condition that forms an itchy rash on the skin or inside the mouth, which can sometimes appear on the thighs.
- Lichen simplex chronicus: A condition characterized by thickened skin due to chronic scratching, which can occur in response to various skin conditions or irritations.
- Granuloma gluteale infantum: A rare condition seen in infants, characterized by reddish-brown nodules in the groin area, which could potentially be confused with a rash on the medial thighs in adults if the presentation is atypical.