Differential Diagnosis for Fungus in Groin
- Single most likely diagnosis
- Tinea cruris (jock itch): This is the most common fungal infection of the groin area, caused by dermatophytes such as Trichophyton, Epidermophyton, and Microsporum. It presents with itching, redness, and a ring-shaped rash.
- Other Likely diagnoses
- Candidiasis: A fungal infection caused by Candida species, which can infect the groin area, especially in individuals with diabetes, obesity, or those who are immunocompromised. It presents with redness, itching, and a white discharge.
- Erythrasma: A bacterial infection caused by Corynebacterium minutissimum, which can present similarly to fungal infections with redness and itching in the groin area.
- Do Not Miss (ddxs that may not be likely, but would be deadly if missed.)
- Cellulitis: A bacterial infection of the skin and subcutaneous tissue, which can present with redness, swelling, and warmth in the affected area. If left untreated, it can lead to serious complications such as sepsis.
- Necrotizing fasciitis: A rare but life-threatening bacterial infection that can present with severe pain, swelling, and redness in the affected area. It requires prompt medical attention to prevent serious complications.
- Rare diagnoses
- Histoplasmosis: A fungal infection caused by Histoplasma capsulatum, which can affect the lungs and other parts of the body, including the skin. It is rare in the groin area but can present with skin lesions and systemic symptoms.
- Sporotrichosis: A fungal infection caused by Sporothrix schenckii, which can affect the skin and present with lesions, ulcers, or nodules. It is rare in the groin area but can occur in individuals who handle plants or soil.