Table 2.

Common symptoms of hypo- and hyperthyroidism

Hypothyroidism	Hyperthyroidism
Fatigue, poor concentration Intolerance to cold Weight gain Dry cold skin Bradycardia Menorrhagia Muscle cramps, paresthesias and weakness Constipation	Nervousness, irritability Intolerance to heat Weight loss and decreased appetite Warm moist skin Tachycardia and palpitations Decreased or absent menstrual cycle Tremor and muscle weakness Diarrhea Infiltrative eye disease, thyroid enlargement