ABSTRACT
Acanthosis nigricans (AN) is a dermatosis characterized by velvety, papillomatous, brownish-black, hyperkeratotic plaques, typically on the intertriginous surfaces and neck. The majority (80%) of AN occurs idiopathically or in benign conditions such as endocrinopathies like diabetes mellitus, polycystic ovary syndrome; metabolic syndrome and/or heritable disease. Malignancy-associated AN is rare. AN may rarely be associated with autoimmune diseases including systemic lupus erythematosus, due to antibodies to the insulin receptor, so-called type B insulin resistance. Here we report a case of AN in a case of diffuse progressive systemic sclerosis without evidence of insulin resistance.
ABSTRACT
Tattooing has been practiced in India since ancient era. It has tremendous religious and spiritual significance. In addition, tattooing for cosmetic purposes has become quite popular in recent times. With this increasing trend, there is also an increased risk of adverse effects. Here, we have described two cases of lichenoid reaction developing to red ink in double- colored tattoos and a case of sarcoidal reaction to green tattoo.
