I’m not sure it’s a symptom of anything….other than aging. I have what is called a trigger finger. I can’t automatically straighten my middle finger on my right hand. It comes and goes. No pain. But, I do think that hand exercises help it a lot. Mine has mostly gone away. Seems like doing dishes with warm / not hot water has helped. I still use my dishwasher but probably do dishes in the sink at least once a day. I also try relaxing in a nice deep bath tub. I believe in avoiding taking any over the counter drugs, and also passing on medical interventions unless they are absolutely necessary.

not sure I have clenched hand due yo syroke