Tremor was the reason for going to the doctor. The tremor was manageable until about 1991, worsened rapidly after that. Could not tolerate Bromocriptine.
Device is on all the time.
I used to turn it off at night but no longer do as I've grown used to a good night's sleep and can't sleep if it's off. Twenty-four hours a day. Batteries are like pacemaker batteries and have to be changed through surgery. Currently, they are expected to last 3-5 years. The surgery for changing batteries can be an office visit, is more often overnight in the hospital.