Different medical disorders presented to hospitals associated with subclinical hypothyroidism which is defined as elevation of serum level of thyroid stimulating hormone (TSH) above 4,5 mIU/L up to 10 mIU/L with normal T4 serum level. soSo
Onlyonly detected by screening, we can say it is a silent asymptomatic medical disorder .
Subclinical hypothyroidism has a prevalence of 6 % in the general population, more common in females and old age , the incidence of progression of subclinical hypothyroidism to overt hypothyroidism is 5-15 % of affected patients per year (1) .
In many studies, they detect the prevalence of subclinical hypothyroidism with different consequences , among 3,089 patients with chronic kidney disease 9,5 %.
Had subclinical hypothyroidism (2) , the prevalence of subclinical hypothyroidism among women with type 2 diabetes is 8,6 % (3) and among 1,149 women with history of aortic atherosclerosis and myocardial infarction, 10,8 % had subclinical hypothyroidism (4) .