Thyroid is a gland located just
below the voice box in the trachea. It is very important because the hormones
secreted by it play vital role in the body. The primary hormone secreted by the
thyroid gland is called thyroxin. It is also known as T4. Iodine is being used by the thyroid gland to
produce hormones by the thyroid gland. In the blood stream T4 is converted to
T3 which is the most active hormone.
Thyroid’s mechanism is controlled by
the brain. When the thyroid hormone level is low the brain gets active to
maintain it. The hypothalamus in the brain produces TRH (thyrotropin releasing hormone)
which actives the pituitary gland to release TSH (thyroid stimulating hormone).
TSH stimulates thyroid gland to release T4 hormone.
Thyroid disorders:
The abnormal conditions of the
thyroid which affect its shape or functions or both are called Thyroid
disorders.
Different
types of thyroid disorders are as follows:
Goiter:
The condition of the thyroid in which it is swollen. [Causes: ]
Thyroiditis:
Painful inflammation of the thyroid from viral infection or autoimmune
condition.
Hyperthyroidism:
Production of excessive hormone. [Causes: Most common cause is the Grave diseases]
Hypothyroidism:
Production of the thyroid hormone is very low. [Causes: Autoimmune diseases
which damage the thyroid].
Thyroid
nodule: A small abnormal mass or lump in the thyroid. It’s very common. It may
cause excess secretion of T4 or may not be harmful.
Thyroid
cancer: This is a rare form of cancer of the thyroid. This type of cancer is
curable by surgery, radiation or hormonal treatment.
Thyroid
storm: An uncommon form of hyperthyroidism. In this condition the secretion of hormone
is extremely high and causes severe illness.
Symptoms
of Thyroid disorder:
It's estimated that as many as 10%
population of the world suffers from thyroid disorder. But common people are
not aware about it. Only in America around 59 million people have a thyroid
problem, but the majority doesn’t know it yet.
There is a wide range of symptoms
of thyroid disorder. Some of them are as drastically weight loss/ gain, heart
problem, hair loss, weakness, infertility, depression, anxiety, sexual disorder
etc.
Generally thyroid symptoms are
not clear so we must consult our family doctor and get blood test in regular
interval of time.
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