There is no cure for most tremors. The appropriate treatment depends on the accurate diagnosis of the cause.
Some tremors respond to treatment of the underlying condition. For example, in some cases of psychogenic tremor, treating the patient's underlying psychological problem may cause the tremor to disappear.
Symptomatic drug therapy is available for several forms of tremor. Drug treatment for parkinsonian tremor involves levodopa and/or dopamine-like drugs, such as bromocriptine mesylate and ropinirole. Other drugs used to lessen parkinsonian tremor include amantadine hydrochloride and anticholinergic drugs.
Essential tremor may be treated with propranolol or other beta blockers (such as nadolol) and primidone, an anticonvulsant drug.
Cerebellar tremor typically does not respond to medical treatment. Patients with rubral tremor may receive some relief using levodopa or anticholinergic drugs.
Dystonic tremor may respond to clonazepam, anticholinergic drugs, and intramuscular injections of botulinum toxin. Botulinum toxin is also prescribed to treat voice and head tremors and several movement disorders.
Clonazepam and primidone may be prescribed for primary orthostatic tremor.
Physical therapy may help to reduce tremor and improve coordination and muscle control for some patients. A physical therapist will evaluate the patient for tremor positioning, muscle control, muscle strength, and functional skills. Some therapists recommend the use of weights, splints, other adaptive equipment, and special plates and utensils for eating.
Surgical intervention, such as thalamotomy and deep brain stimulation, may ease certain tremors. These surgeries are usually performed only when the tremor is severe and does not respond to drugs.
Deep brain stimulation (DBS) uses implantable electrodes to send high-frequency electrical signals to the thalamus.
The most common side effects of tremor surgery include dysarthria (problems with motor control of speech), temporary or permanent cognitive impairment (including visual and learning difficulties), and problems with balance.
This answer is based on source information from the National Institute of Neurological Disorders and Stroke.