Muslim Takhayev said the number of patients suffering from the disorder, which a Moscow medical commission concluded Friday was caused by psycho-emotional stress, was 54. Overall, 87 cases have been registered so far.
Zurab Kikalidze, deputy head of the well-known Serbsky Institute of Forensic Psychiatry, said earlier that the people of the war-torn republic had been living under constant stress in recent years. He called it a "psychological disorder."
Russia's chief doctor, Gennady Onishchenko, has arrived in the capital of Grozny to study the situation.