Symptoms of thyroid hormone deficiency or Hypothyroidism in adults include:

fatigue, lethargy, depression, cold intolerance, weight gain, constipation, dry skin, muscle pain, puffiness of face, metabolic abnormalities like hyper-cholesterolemia,

menstrual irregularity and infertility.

In children, Hypothyroidism affects growth, height, concentration level and sleep. In infants, it’s the main cause of low IQ and mental retardation.