ANATOMY

Detailed explanation-1: -Graves disease is an autoimmune disorder that leads to an overactive thyroid gland (hyperthyroidism). An autoimmune disorder is a condition that occurs when the immune system mistakenly attacks healthy tissue.

Detailed explanation-2: -About 3 in every 4 people with an overactive thyroid gland have a condition called Graves’ disease. Graves’ disease is an autoimmune condition where your immune system mistakenly attacks your thyroid which causes it to become overactive.

Detailed explanation-3: -Hashimoto’s disease is an autoimmune disorder that can cause hypothyroidism, or underactive thyroid. Rarely, the disease can cause hyperthyroidism, or overactive thyroid. Thyroid hormones control how your body uses energy, so they affect nearly every organ in your body-even the way your heart beats.