Is focal chronic autoimmune thyroiditis an age-related disease?

No: Autoimmune thyroiditis can occur in young children, adolescents and adults of any age. We see it most often in children who have a family history of that condition. In many children that we have seen, it was mild but symptomatic enough that their mother recognized the condition and sought treatment. Even with mild disease in children the treatment can have profound benefits.

No: It can happen at any age.