User:Mr. Ibrahem/Pitted keratolysis

Pitted keratolysis is a superficial bacterial skin infection of the foot. Symptoms include areas of pits on the weight bearing parts of the soles of the feet and bad smelling feet. The pits are generally about 1 to 7 mm in size. The areas may also be sore or itchy.

The cause is often infection by Corynebacterium bacteria such as Kytococcus sedentarius. Risk factors include excessive sweating of the feet, occlusive footwear, diabetes, and older age. Diagnosis is usually based on appearance and smell.

Treatment is with antibiotics applied to the skin, such as clindamycin, erythromycin, or mupirocin. Benzoyl peroxide may also be used. Prevention is by keeping the feet dry by using moisture-wicking socks and antiperspirant.

Pitted keratolysis is relatively common, with 2.5% of people in New Zealand affected. Professions at risk include military, farmers, athletes, and sailors. Males are more commonly affected than females. It occurs more commonly among those in tropical locations who do not wear shoes. It was first described in 1910 by Castellani.