Thyroid Problem. Thyroid problems may or may not involve too little or too much thyroid function. Too little - cold insensitivity, fatigue, hair loss, dry skin, constipation; too much -- heat intolerance, rapid pulse, weight loss, tremor, and more. An enlarged gland, a goiter, may be found on exam. If a nodule is found or suspected, an ultrasound exam will demonstrate the anatomy. Blood tests measure function.
Symptoms/Testing. Symptoms can point to the cause then an exam and blood testing can confirm. Increased thyroid (hyperthyroidism) has it's own set of symptoms as does low thyroid (hypothyroidism). The physical exam will be different for both as will be the blood testing. Hyperthyroidism will have a very low TSH and hypothyroidsim will have a very high tsh. If suspected thyroid disease, get in to see your pcp.