Hi, thanks for writing to HCM. The causes of hand tremors are numerous and need not be only due to Parkinsons disease. Few causes of Hand tremors - * Neurological disorders like stroke, multiple sclerosis, parkinsons * Medical conditions like Alchohol withdrawal, liver and thyroid disorders * Stress, fatigue , anxiety ,Hypoglycemia , over use of caffienated drinks Basically, tremors are of 3 types - * Resting tremor - It is maximal at rest and decreases with activity and is typical of parkinsonism ( your symptoms are exactly the reverse of this with increased shaking with activity, so parkinsonism can be ruled out in your case ) * Postural tremor - is maximum when limb position is maintained against gravity and commonly seen in metabolic disorders like hyperthyroidism and due to stress also. * Intentional tremor - most prominent during voluntary movement towards a particular target and is not present at rest. This is a sign of cerebellar disease. I suspect this in you. So, I suggest you to visit a neurophysician and get a detailed evaluation done. Hope this helps