Differential Diagnosis for Yeast Infection in Buttocks and Sacral Area
Single Most Likely Diagnosis
- Cutaneous Candidiasis: This is the most likely diagnosis given the location and description of the infection. Candida species, particularly Candida albicans, are common commensals on the skin and can cause infection in warm, moist areas like the buttocks and sacral region, especially in individuals with diabetes, immunosuppression, or those using antibiotics.
Other Likely Diagnoses
- Intertrigo: A type of skin inflammation caused by friction in skin folds, which can become secondarily infected with yeast, bacteria, or fungi. The buttocks and sacral area are prone to intertrigo, especially in obese individuals or those with limited mobility.
- Erythrasma: A bacterial infection caused by Corynebacterium minutissimum, which thrives in warm, moist areas of the body. While it's more commonly associated with the groin, it can also occur in the buttocks and sacral area, presenting similarly to a yeast infection.
- Contact Dermatitis: An allergic or irritant reaction that could mimic a yeast infection in appearance, especially if the causative agent is a substance that comes into contact with the buttocks and sacral area.
Do Not Miss Diagnoses
- Sacroiliitis or Osteomyelitis: Although less common, infections of the sacroiliac joint or bone can present with symptoms similar to a superficial skin infection, including pain and redness in the sacral area. These conditions are serious and require prompt medical attention.
- Necrotizing Fasciitis: A rare but life-threatening infection of the tissue beneath the skin, including fat and fascia. It can start as a seemingly minor skin infection but rapidly progresses, requiring immediate medical intervention.
Rare Diagnoses
- Chromoblastomycosis: A chronic fungal infection of the skin and subcutaneous tissue, more common in tropical and subtropical regions. It can present with lesions in the buttocks and sacral area but is relatively rare.
- Sporotrichosis: A fungal infection caused by Sporothrix schenckii, typically acquired through skin prick injury from a thorn or similar object. It can cause lesions that might resemble a yeast infection, although it's more commonly associated with lymphocutaneous spread.