Differential Diagnosis for Itchy Rash in Both Armpits
- Single Most Likely Diagnosis
- Contact dermatitis: This is a common condition that occurs when the skin comes into contact with an irritant or allergen, leading to an itchy rash. The armpits are a common area for contact dermatitis due to friction, sweat, and the use of personal care products.
- Other Likely Diagnoses
- Eczema (atopic dermatitis): A chronic skin condition characterized by itchy, inflamed skin, which can affect the armpits.
- Intertrigo: A skin condition caused by friction and moisture, leading to an itchy, red rash in skin folds, including the armpits.
- Seborrheic dermatitis: A condition that causes a red, itchy rash, often in oily areas of the body, including the armpits.
- Do Not Miss Diagnoses
- Inverse psoriasis: A type of psoriasis that occurs in skin folds, including the armpits, and can be itchy and painful. Missing this diagnosis could lead to delayed treatment and worsening of symptoms.
- Lymphoma (cutaneous T-cell lymphoma): A rare type of cancer that can cause skin lesions and rashes, including in the armpits. Early detection is crucial for effective treatment.
- Rare Diagnoses
- Dermatophyte infection (tinea axillaris): A fungal infection that can cause an itchy rash in the armpits.
- Pityriasis rosea: A rare skin condition that can cause an itchy rash, although it typically starts on the trunk and spreads to other areas.
- Granuloma glutiale: A rare skin condition caused by long-term use of certain medications or irritants, leading to itchy, painful lesions in the armpits.