Underactive Thyroid
An underactive thyroid is also called hypothyroidism. It is a disease in which the thyroid enough hormones are not produced by the thyroid gland. Hypothyroidism can be seen in patients with arthritis that resembles rheumatoid arthritis. There is a well-known association between the manifestation of hyperthyroidism and muscular disease. Trigger finger has been observed in the people having hyperthyroidism. Hypothyroidism causes stiffness of muscles, proximal weakness, swelling and stiffness of the muscles. It can also result in synovial thickening, the formation of nodules and ligamentous laxity, which can result in progression of trigger finger. According to a research trigger finger occurred in 10% of the patients who were having hypothyroidism. When the study was analyzed concerning thyroid status both trigger finger and carpal tunnel release sown to be prevalent in the hypothyroid group of patients, Therefore the people with hypothyroidism are at greater risk of suffering from trigger finger which makes it a significant reason of trigger finger.