Is it permissible to seek out Ruqyah Sharia without the family's knowledge due to being afflicted by possession and a deteriorating health condition?

It is better for you to treat yourself with remembrance (dhikr) and supplication (du'a) while relying on Allah. Do not rush to attribute your fatigue and weakness to jinn possession, as it could be an organic or psychological illness. Therefore, consult trustworthy female doctors. You are not permitted to go out without your guardian's permission, as he is responsible and accountable for you, unless the matter reaches an unbearable hardship, in which case it is permissible to go out to relieve the difficulty.