Erythrasma

Patients may report a reddish-brown, itchy rash that slowly enlarges, usually in moist areas like the groin, armpits, and between toes. There may be no pain, but discomfort often arises with sweating or friction. Erythrasma risk is higher in patients with diabetes, obesity, or immune suppression. 

Patients may report a reddish-brown, itchy rash that slowly enlarges, usually in moist areas like the groin, armpits, and between toes. There may be no pain, but discomfort often arises with sweating or friction. 

1. Topical Antibiotics:

   • Clindamycin or Erythromycin creams applied twice daily for 7–14 days. These are effective first-line treatments.

2. Oral Antibiotics:

   • Erythromycin (250 mg orally four times daily for 7 days) is an option for extensive infections. It’s effective against Corynebacterium minutissimum, the bacteria causing erythrasma.

3. General Care and Prevention:

   • Encourage keeping affected areas dry, regular washing, and avoiding tight clothing. Recurrence is common, so maintaining hygiene in moist areas is crucial.

Risk Factors, Prognosis, and Complications
Prognosis is generally favorable with treatment, though recurrences are frequent if risk factors persist. Rarely, untreated erythrasma can spread, leading to extensive skin involvement.