Defective Thyroid Symptoms

The thyroid is an important gland whose function--or dysfunction---affects every cell in your body. Shaped like a butterfly, the thyroid is located in your throat, from there releasing hormones that regulate metabolism and, thus, determining how your body uses energy. In hypothyroidism, metabolism decreases; in hyperthyroidism, the opposite is true. Important body functions can be compromised by a dysfunctional thyroid, so it's important to know symptoms of a defective thyroid gland.

Weight

• Hyperthyroidism might cause weight loss, despite eating more. With hypothyroidism, sufferers might gain weight and have problems losing it.

Energy and Reproductive Organs

• Hypothyroidism can cause weakness, weariness and decreased libido. Hyperthyroid problems can cause restlessness, jumpiness and insomnia. Men may have erectile dysfunction. Either thyroid problem can cause abnormal menstrual cycles.

Mental Outlook and Mood

• Irritability can result from a thyroid problem. Additionally, those with hypothyroidism can suffer memory loss and depression.

Eyes, Hair and Skin

• The eyes of people with hyperthyroidism can begin to bulge or look more prominent. Double vision can occur. Those with hypothyroidism can start to lose hair, which can turn dry and coarse. Skin can also turn dry and rough, and can look pale. While hyperthyroidism can make sufferers feel hot and increase sweating, hypothyroidism can increase sensitivity to cold.

Muscles and Cardiovascular System

• Those with hypothyroidism might have aching muscles and cramps. Hyperthyroidism can cause muscle weakness, shortness of breath, difficulty breathing, palpitations and chest pain.

Bowel Movements

• People with hyperthyroidism might see an increase in bowel movements, while those with hypothyroidism might become constipated.