I get it worse if I do weed or alcohol. Benzo helps tho.
It is overall more common than younger. I think that sometimes happens. Some eventually develop it sober. I get it only on amphetamines.
You can try low-dose anticholinergic if that's safe (dunno rly, it can make your body temperature high). I have not tried but I have read some about acetylcholine enhancing or allowing this happen. But this is really stretch of a suggestion, don't be my guinea pig if you don't feel like it.