Differential Diagnosis for 41 yo Male with Right Arm and Chest Spots
Single Most Likely Diagnosis
- Tinea corporis (ringworm): This is a common fungal infection that can cause spots or lesions on the skin, often appearing as circular, red, and scaly patches. The fact that the patient describes the spots as "apparent fungal" supports this diagnosis.
Other Likely Diagnoses
- Pityriasis versicolor: A fungal infection caused by Malassezia yeast, which can lead to discolored spots on the skin, particularly on the chest and back.
- Eczema (atopic dermatitis): A chronic skin condition characterized by itchy, inflamed skin, which can sometimes be mistaken for a fungal infection.
- Psoriasis: An autoimmune condition that can cause red, scaly patches on the skin, potentially resembling fungal spots.
Do Not Miss Diagnoses
- Lymphoma (cutaneous T-cell lymphoma): Although rare, this type of cancer can present with skin lesions that might be mistaken for fungal infections. It's crucial to consider this diagnosis to avoid delayed treatment.
- Infectious diseases (e.g., syphilis, leprosy): Certain infectious diseases can cause skin lesions that might resemble fungal spots, and missing these diagnoses could have serious consequences.
Rare Diagnoses
- Chromoblastomycosis: A rare fungal infection that can cause long-standing skin lesions, typically found in tropical regions.
- Sporotrichosis: A fungal infection caused by Sporothrix schenckii, which can lead to skin lesions, often after exposure to contaminated soil or plants.