Pigmented lesions are commonly found in the oral cavity. Oral pigmentations may be physiological or pathological in nature. It may represent as a localized anomaly of limited significance or the presentation of potentially life threatening multisystem disease. Oral pigmentation has a multifactorial etiology. Most of the oral pigmentations are physiologic. Evaluation of a patient with pigmented lesions should include a full medical and dental history, extraoral and intraoral examinations. In this article, we report a case of extensive physiologic pigmentation of the oral cavity in a 12 year old female patient, posing a diagnostic challenge.

Acute Kidney Injury (AKI) complicating snake envenomation may pass for a "neglected" health condition in regions or parts of the world where its incidence is not as common. Now -a -days snake bite is a quite common in rural areas of India. Hence snake bite is considered as a important health hazard. Snake bite may also cause the mortality and morbidities of a person. Snake bite may produce the toxic effects to the multiple organs and may produce the injury mainly to the kidneys. Mostly snake bite produce the acute kidney injury and also risk for the many complications to the multiple organ dysfunctions and if it was not treated well leads to the mortality. Here we report a case of a person with snake bite which induce the acute kidney injury i,e acute tubular necrosis. He was treated with appropriate therapy according to the symptoms and also treated with haemodialysis without development of adverse effects and with supportive therapy.