This is a term that is used for an underactive thyroid. This also corresponds to slower metabolism.
Many people who are diagnosed with hypothyroidism complain of hair falling out especially when combing. This irritates mostly females. Eyes and face can be swollen, and even loss of part of the eyebrow.
Symptoms that can make diagnosis more accurate include acid reflux, irritable bowel syndrome, intolerance to cold, fatigue, constipations, pain in joints.
Another common symptom is fatigue. Accompanying this is the inability to shed off some pounds or even unexplained weight gain irrespective of the diet and lifestyle. Someone may be even following a restrictive diet with respect to weight loss yet all actions are in vain.
Also, many people complain of the inability to remember things as good as before they were diagnosed with an underactive thyroid. Sometimes this disorder may cause an imbalance in normal mental behavior and tendencies may be towards depression and anxiety. People who were naturally extroverts all of a sudden find no pleasure in living life fully. Most of the times this is misdiagnosed for other serious mental problems like bipolar disorder and even go through intense medical procedures when the problem is only in the thyroid.
Hypothyroidism may have a toll on sex urge and fertility. This is stressful to women who are at child bearing age since it leads to problems with conception, or with every successful conception, a miscarriage follows.
An overactive thyroid is the exact opposite of hypothyroidism. The thyroid hormone is made in surplus causing an accelerated rate of metabolism. The affected person develops symptoms such as irritability and anxiety. In other instances, the heart beat is stronger than normal and the eyes can be protruded from their normal anatomical position.
Hair loss is also not exempted in hyperthyroidism. Extreme exhaustion also can be manifested with rapid weight loss under a short period than expected.