Symptoms ofhypothyroidism are linked to slow-down metabolism. They depend on the extent of the thyroid hormone deficit and often appear very gradually. Some people have no symptoms; only the blood test then makes it possible to establish a diagnosis.

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• A lack of energy and fatigue.
• A chilliness.
• A gain of weight unexplained despite poor appetite.
• A rhythm cardiac slow motion may cause shortness of breath.
• A irritability and sometimes a depressive state.
• Muscle cramps, stiffness, and pain in the joints.
• Constipation.
• Face and eyes swollen.
• A skin pale and dry.
• benefits hair dry, hair loss.
• benefits nails brittle.
• A voice more serious and hoarse.
• Cycles menstrual irregular, longer or even absent and heavier periods.
• A infertility.
• A confusion, difficulty concentrating and memory loss, especially in the elderly.
• Goiter (sometimes), which is swelling at the base of the neck due to the enlargement of the thyroid.
• A high rate of cholesterol blood.

In children at birth (in case of congenital hypothyroidism)

• Small size at birth, lower than normal with normal or high weight.
• jaundice (or jaundice, yellowing of the skin) neonatal older than 8 days.
• Persistence of lanugo (fine hairs of babies at birth)
• Blue circles around the eyes and nostrils,
• Widening of the fontanelles.
• Constipation
• Lack of appetite, sucking disorders,
• Big tongue,
• Abnormally hoarse cries,
• Muscle hypotonia,
• Drowsiness,
• Little crying,
• Dry skin,
• Delay of psychomotor acquisitions detectable from the third month.

In older children if hypothyroidism later

The signs resemble those of an adult, with the addition of:

• Stunted growth,
• Large muscle volume especially in the calves,
• Decline in academic performance.