Pitted keratolysis

Pitted keratolysis is caused by a cutaneous infection with Corynebacterium and Actinomyces. It is often associated with hyperhidrosis. It is common in this part of the world because of occlusive footwear. Twice daily application of erythromycin or clindamycin is effective.

Speckled lentiginous nevus

Speckled lentiginous nevus is a patch of hyperpigmentation representing a localized defect in neural crest melanoblasts. Several black or brown macules are seen within a patch of brown hyperpigmentation. Some consider this a variant of Congenital melanocytic naevus.

DermaMan: A dermatology calculator for PDAs

I have recently made a simple application to bring basic dermatology related calculations to hand held devices in Java. It includes modules for frequently used dermatological calculations like PASI, MASI, SCORAD and for PUVA and Botox (R) related calculations.

DermaMan is a freeware which can be downloaded from http://www.gulfdoctor.net/derm/dermaman.htm if you are accessing from a PC and http://www.gulfdoctor.net/mobile/derm.htm if you are accessing from your hand held device for over-the-air installation. All modules are packaged as a single JAR file. Specific instructions for installation depend on your device and are usually available from the manufacturer’s user-guide. General instructions are available from the web pages mentioned above.

A more detailed description of the software is in print in the ‘Resident’s corner’ section of IJDVL, March-2008 issue. Please read the disclaimer before you download the software. Use this thread for support, bug report and feature requests.

Fixed Drug Eruptions (FDE)

Hands, feet, and genitalia are the most common locations for Fixed Drug Eruptions (FDE) and lesions recur in the same area when the offending drug is given.

Hansens Disease (Leprosy)

First Hansen’s I have seen after coming here. The treatment was hindered by the non availability of Dapsone and clofazamine. With the emergence of latest bactericidal drugs it is not much of a problem any more.

Sclerotic patch

This 35 year old Asian male patient presented with this unilateral hyperpigmented sclerotic patch over the face for 20 years. What is your diagnosis?

Periorificial crusting and acral desquamation

This poorly nourished 2-year-old girl developed asymptomatic erythema and crusting of the periorificial areas of the face over last one month. Desquamation of the distal phalanges of the fingers and the toes was also noted. Please take a look at the images and share your comments regarding the differential diagnosis.