Is severe morning erection, without a wet dream, caused by jinn possession from a female jinn preventing marriage?

You must cover yourself when sleeping to avoid embarrassment and criticism. We also advise you to marry, in compliance with the command of the Prophet, peace and blessings be upon him: "O young people, whoever among you can afford to marry, let him marry, for it helps him lower his gaze and guard his chastity. And whoever cannot afford to marry, let him fast, for it will be a shield for him." We do not believe that your condition is a symptom of magic or jinn possession, but there is no harm in presenting yourself to a trustworthy shaykh and undergoing medical examinations.