Muscle atrophy can also happen if you are bedridden or unable to move certain body parts due to a medical condition. Astronauts, for example, can also experience some muscle atrophy after a few days of weightlessness. Other causes for muscle atrophy include: 1  lack of physical activity for an extended period of time. 2  aging.  alcohol-associated myopathy, a pain and weakness in muscles due to excessive drinking over long periods of time.
In addition, TSH tests are used to help diagnose a condition called subclinical hypothyroidism, which usually causes no outward signs or symptoms. In this condition, you have normal blood levels of triiodothyronine and thyroxine, but higher than normal levels of TSH. Nov. 10, 2015.
A thorough medical history and physical exam are the first steps in diagnosing hypothyroidism or mild (subclinical) hypothyroidism. If the results lead your doctor to suspect you have hypothyroidism or subclinical hypothyroidism, you will have tests to confirm the diagnosis. Blood tests are always used to confirm a diagnosis of hypothyroidism or mild hypothyroidism. Thyroid-stimulating hormone (TSH) test. Thyroxine (T4) measurement.