Pyotr Nikolsky

Pyotr Vasilyevich Nikolsky (1858 – 1940) was a dermatologist from Usman who studied medicine and worked in Kiev, now the capital of Ukraine, but at that time, part of the Russian Empire.

He studied medicine at the medical faculty of the University of Kiev (now National Medical University), and from 1884 was an assistant to Mikhail Stukovenkov at the dermatology clinic in Kiev. In 1900, he became a professor at Warsaw, and later worked as a professor in Rostov.

He published articles in French as well as Russian on skin diseases and on the treatment of syphilis. He was the author of "L'etat de la dermatologie et de la syphiligraphie en Russie jusqu'à 1884" (The state of dermatology and syphiligraphy in Russia up until 1884).

In 1896, he published an article on pemphigus, in which he described a dermatological condition involving a weakening relationship among the epidermal layers. The sloughing of skin associated with certain varieties of this condition is now referred to as "Nikolsky's sign".