essential arms lower

Essential tremor (ET), also called benign tremor, familial tremor, and idiopathic tremor, is a medical condition characterized by involuntary rhythmic contractions and relaxations (oscillations or twitching movements) of certain muscle groups in one or more body parts of unknown cause. It typically is symmetrical, and affects the arms, hands, or fingers; but sometimes involves the head, vocal cords, or other body parts. Essential tremor is either an action (intention) tremor - it intensifies when one tries to use the affected muscles during voluntary movements such as eating and writing - or it is a postural tremor - it is present with sustained muscle tone. It is not a resting tremor.Essential tremor is a progressive neurological disorder, and the most common movement disorder. Its onset is usually after age 40, but it can occur at any age. The cause is unknown. Diagnosis is by observing the typical pattern of the tremor coupled with the exclusion of known causes of such a tremor.
Essential tremor is distinct from Parkinson's disease, which causes a resting tremor; nevertheless, essential tremor is sometimes misdiagnosed as Parkinson's disease, and some have both conditions.Treatments for essential tremor include medications, typically given sequentially to determine which is most effective coupled with which has the least troublesome side effects. Clostridium botulinum toxin (Botox) injections and ultrasound are also sometimes used for cases refractory to medications.

View More On Wikipedia.org