Essential Tremor

Essential Tremor


Signs and Symptoms

  • Action tremor of the upper extremities (shoulder, arm, forearm, wrist or hand)
  • May involve a resting tremor of the head and neck and/or lower jaw
  • Can also involve the voice
  • Difficulty writing, drinking from a cup, dialing a telephone


  • Essential tremor is the most common type of movement disorder
  • Effects men and women equally and is inherited in 60% of all cases
  • Tremors on the right side of the body are caused by overactive brain cells in the left thalamus and vice versa. 
  • Only a small part of the thalamus, called the ventral intermediate nucleus (VIM) is the cause of the tremor.

Gamma Knife Treatment for Essential Tremor

Our experienced Gamma Knife team works collaboratively to treat those with Essential Tremor. The Gamma Knife targets the cells of the ventral intermediate nucleus (VIM) in the thalamus with such accuracy that it minimizes the risk of radiation to nearby normal parts of the brain. The unique design of the Gamma Knife includes 192 beams of focused radiation with a low dose of radiation until the combined beams meet at the targeted VIM and destroy the overactive cells.

  • Non- invasive treatment
  • No general anesthesia
  • Preserves healthy tissue surrounding the target area
  • Outpatient procedure
  • Planning and treatment on the same day
  • Few if any side effects
  • For tremors of the right side, the left thalamus is treated and vice versa.
  • Patients typically see reduction in tremor within 3-6 months of treatment.
  • For those with tremors on both the left and right side, a second Gamma Knife procedure can be done a year after the first treatment.

Learn how Gamma Knife Works 

Learn about the Gamma Knife Treatment Process 

Contact Information

Radiosurgery Center
550 17th Ave.
Suite A10
Seattle, WA 98122
Phone: 206-320-7130
Fax: 206-320-7137
Office Hours: Monday-Friday. 8 a.m.-4:30 p.m
Map & Directions

Patient Education

Download and print our Essential Tremor Brochure

Gamma Knife/Essential Tremor Videos


Watch & Learn
Gamma Knife treatment overview video click_here_btn.jpg


Watch & Learn
Dr. Young provides overview of Essential Tremorclick_here_btn.jpg


Watch & Learn
Dr. Young discusses radiosurgery on New Day NW.


Patient Handout

Gamma Knife Treatment Process
Download and print .