@garyr443
ET affects approximately 1 to 24 individuals per million globally.
In the United States, the incidence is estimated at 0.6 to 2.5 cases per 100,000 people annually.
The condition is more commonly diagnosed in adults, particularly those around 60 years old, but it can also occur in younger individuals.

This rarity contributes to challenges in diagnosis and treatment, as many healthcare providers may not be familiar with the condition