What is the ruling regarding a man who divorced his wife with three separate pronouncements of divorce due to recurring disputes, while suffering from obsessive-compulsive disorder (OCD), and the words of divorce were uttered without his conscious intention?

Anger does not prevent a divorce from occurring as long as the person is aware of what he is saying, and the divorce of one who is affected by waswas (obsessive whispering) is valid if it is issued by his own choice. So, if you issued three divorces, being aware and by choice, then your wife has become irrevocably separated from you by a major separation (baynunah kubra). She cannot return to you until she marries someone else, and he consummates the marriage with her, then he divorces her, and her iddah (waiting period) from him ends. It is advised to present the matter to a Sharia court or to trusted scholars.