Nikolsky's sign is a clinical dermatological sign, named after Pyotr Nikolsky (1858–1940), a Russian physician who trained and worked in Ukraine, which was part of the Russian Empire at that time.
Pyotr Bagration | Pyotr Kapitsa | Pyotr Vyazemsky | Pyotr Stepanov | Pyotr Nikolsky | Pyotr Nikolayevich Wrangel | Pyotr Nesterov | Pyotr Leshchenko | Pyotr Krasnov | Pyotr Kozlov | Pyotr Kolodin | Pyotr Suvchinsky | Pyotr Rumyantsev | ''Pyotr Potemkin'' by Godfrey Kneller | Pyotr Mikhaylovich Yershov | Pyotr Leshchenko (TV Series) | Pyotr Dolgorukov | Pyotr Demichev | Pyotr Blinov | Pyotr Aleksandrovich Tolstoy | Nikolsky District, Vologda Oblast | Nikolsky District |