Guillain-Barré syndrome is a rare neurological disorder causing rapid muscle weakness due to the immune system attacking peripheral nerves.

Graves' disease is an autoimmune disorder that causes hyperthyroidism, characterized by an overactive thyroid gland.

Sjögren's syndrome is an autoimmune disorder characterized by dry eyes and mouth due to immune system attacks on glands.

Graves' disease is an autoimmune disorder that causes hyperthyroidism, leading to increased metabolism and symptoms like weight loss and anxiety.