Hospitalisation is a difficult one. It is often used as a last resort as it is generally not the best place to get better, they can be very disruptive places.
However, if you are a severe risk to yourself (imminent suicide plan, severe self harm or severe self neglect) then an admission may be appropriate. If this is the case then definitely make an emergency GP appointment, contact your care coordinator or go straight to A&E.
If you're struggling at the moment which it sounds like you are, maybe seek a review with your treatment team? Are you with a mental health team? If not, maybe a referral there may be appropriate. Or the home treatment team is always an option.
Of course, if you are concerned, contact your GP/ care team or go to A&E if it is an emergency.
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