Hyperthyroidism is known as overactive thyroid. It occurs when your thyroid gland makes and releases too much thyroid hormone. The thyroid gland is shaped like a butterfly. It is located in the front of your neck, below your Adam’s apple. The thyroid makes hormones that control how your body uses energy. It affects your heart rate and the function of your other organs. It also affects your muscles, bones, and menstrual cycles (for women).
Hyperthyroidism can be related to Graves’ disease. This is an autoimmune disease that affects the thyroid gland.
Hyperthyroidism often begins slowly. Its symptoms can be mistaken for stress or other health problems. Common symptoms include:
• Unplanned weight loss.
• Rapid heartbeat, abnormal heartbeat, or pounding of the heart.
• Nervousness, anxiety, or touchiness.
• Tremors (trembling of the hands and fingers).
• Changes in menstrual patterns, such as lighter flow or less frequent periods, in women.
• Increased sensitivity to heat.
• Increased sweating.
• Changes in bowel
• An enlarged thyroid gland (called a goiter), which can appear as swelling at the base of the neck.
• Muscle weakness.
• Trouble sleeping.
• Increased appetite.