Does obsessive-compulsive disorder, which involves internal blasphemy and cursing and thoughts of atheism, affect a person's faith, what is their standing in Islam, and should they consult a psychiatrist?

Whispers (waswasah) and self-talk are forgiven by Allah as long as one does not act upon them or speak them aloud, as evidenced by the Prophet's (peace be upon him) saying: "Indeed, Allah has pardoned for my Ummah whatever whispers or self-talk they have, as long as they do not act upon it or speak it."

A person's dislike of these thoughts and whispers is a sign of strong faith, as the Prophet (peace be upon him) said in a Hadith: "That is clear faith."

If the questioner utters insults involuntarily due to obsessive-compulsive disorder (OCD), he is not held accountable for it. He is advised to consult trustworthy psychiatrists and perform ruqyah (Islamic exorcism/healing).