Neurological inquary

Patient: Please , i would be to ask about my father case , he is about 58 , diabetic since 2 year on glibenclamide 5 mg once and metformin 500 mg once , since a few months ago he has distal upper limb tremor associated with general fatigue , also I notice weakness in his lower jaw.although he had controlled blood sugar , no other chronic illness

Symptoms: Hand tremor on action , general fatigue & loss of weight .