The news articles published by the Daily Express and New Zealand Herald disproves the statement.
The Daily Express article explained that Director of the Aktobe Medical Centre Dr Rustam Isaev said that the patient in the video is Alexander, he was suffering from the common skin ailment. He was treated in the hospital and was discharged, in satisfactory condition, into his mother's care.
New Zealand Herald had reported that the man who is in the video was suffering from a skin disease called "Psoriasis". Earlier he had neglected to get treated for his skin condition. The chief doctor also adds that the footage of the naked man was taken during a medical examination and was leaked online with a false storyline.
Therefore, the video shows a patient with a chronic skin disease receiving the treatment in a hospital in Kazakhstan.