Heyy I can help you better with further treatment course needed. U can connect me via whatsapp on seven zero eight two zero two two zero six two.

Not much indicated for it. Advise you to get a second opinion from an astute psychiatrist. Good luck

What symptoms you are describing seems like akathisia. This usually happens due to antipsychotics. If you are taking them and experiencing this symptoms then get it checked. Usually benzodiazepines give a better control than THP which is an anticholinergic agent. But I would need to get more information to diagnose the condition properly and tell you proper treatment

Trihexphenydyl is usually prescribed as a add on to other medications to prevent or decrease extra pyramidal symptoms including restlessness, tremors, stiffness

Yes trihexiphenidyl helps with restlessness but question should be clear what were the medicines prescribed prior to THP?