Possible causes include:
- Ingrown hairs from shaving, which can become inflamed or infected
- Folliculitis, a bacterial or fungal infection of hair follicles
- Jock itch (tinea cruris), a fungal rash that thrives in sweat and moisture
- Contact dermatitis, an allergic reaction to soaps, detergents, or fabrics
- Intertrigo, irritation caused by friction and trapped moisture in skin folds
Most cases are treatable with proper hygiene, breathable clothing, and targeted creams, but persistent symptoms shouldn’t be ignored.
