Skin Deep - Clinical & Cosmetic Dermatology Blog

Skin Deep is a blog for dermatologists and skin care professionals with focus on theoretical, cosmetic and aesthetic dermatology. This blog is associated with ‘Dermatologists Sans Borders’ one of the largest curated groups of skin care professionals on facebook. If you are looking for non-technical information, please visit

Riehl's melanosis

Riehl's melanosis, now synonymous with pigmented contact dermatitis is an entity, not probably studied extensively. It is more common in people with dark complexion and sensitizing chemicals in cosmetics are incriminated. It was common in Europe during world war II and the incidence reduced with the end of the war.
However this is a very common problem in South Indian and the expatriate population in Gulf. In this region it is more common in males. Due to its predilection for forehead just above the eyebrows, some of us call it seborrhoeic melanosis attributing it to post inflammatory hyperpigmentation due to seborrhoic dermatitis.

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About Me

As a Dermatologist and Informatician my research mainly involves application of bioinformatics techniques and tools in dermatological conditions. However my research interests are varied and I have publications in areas ranging from artificial intelligence, sequence analysis, systems biology, ontology development, microarray analysis, immunology, computational biology and clinical dermatology. I am also interested in eHealth, Health Informatics and Health Policy.


Bell Raj Eapen
Hamilton, ON