L08.1

Clinical Causes: Overgrowth of Corynebacterium minutissimum bacteria on the skin Warm and humid environments that promote bacterial proliferation Excessive sweating or high humidity levels Poor personal hygiene or inadequate skin drying after bathing Pre-existing skin conditions that cause skin moisture and irritation Obesity, which can increase skin friction and moisture in folds Certain chronic illnesses that weaken immune response

Key Symptoms: Small, scaly patches that are often reddish-brown or coral in color Patches typically appear in skin folds such as groin, underarms, or between toes Itching or mild discomfort in affected areas Skin may appear slightly shiny or wrinkled in the patches In some cases, the patches may enlarge or multiply over time Possible mild odor associated with bacterial overgrowth

Diagnosis Path: Diagnosis is usually based on the characteristic appearance of the skin lesions, their distribution, and patient history. A clinician might perform a Wood's lamp examination, where the infected areas fluoresce a coral-red color under UV light, which is indicative of erythrasma. Skin scrapings can also be examined under a microscope or cultured to identify Corynebacterium minutissimum. In some cases, a KOH test may help rule out fungal infections that can mimic erythrasma.

Treatment Protocols: Erythrasma typically responds well to topical or oral antibiotics, aimed at reducing bacterial overgrowth. Common treatments include: - Topical antibiotics such as erythromycin or clindamycin applied directly to the affected skin - Mild topical antiseptics or benzoyl peroxide to reduce bacterial populations - In extensive cases, oral antibiotics like erythromycin may be prescribed - Good hygiene practices, including keeping skin dry and clean - Wearing loose, breathable clothing to minimize moisture buildup - Managing underlying conditions such as obesity or excessive sweating Regular follow-up with healthcare providers may be necessary to monitor treatment progress and prevent recurrence.