Should one turn to a legitimate raqi or a psychiatrist to treat escalating obsessive-compulsive disorder, and is it permissible to seek guidance from God (istikharah) in this matter?

It is permissible for a Muslim to perform Ruqyah (Islamic incantation) upon themselves, or to seek out a trustworthy, pious raqi (one who performs Ruqyah). There is no harm in seeking medical treatment from a doctor, as this is among the permissible means [of healing], and the Prophet, peace and blessings be upon him, encouraged Ruqyah and seeking remedies. One must be careful not to go to charlatans, and should consistently engage in supplication and recite Surah Al-Fatihah into Zamzam water and drink it.