The thyroid is the gland in your neck associated with your metabolism, which are the processes that help your body use energy. Lupus, which causes your immune system to attack its own tissues, can affect your thyroid. A thyroid gland that does not function properly can affect your brain, heart, kidneys, liver, and skin.
About six percent of people with lupus also suffer from hypothyroidism, which is an underactive thyroid. Hypothyroidism can cause weight gain, fatigue, depression, moodiness, and dry hair and skin. About one percent of people with lupus also suffer from hyperthyroidism, which is an overactive thyroid.
Hyperthyroidism can cause weight loss, heart palpitations, tremors, heat intolerance, and eventually lead to osteoporosis.
Treatment for both underactive and overactive thyroid involves getting your body's metabolism back to the normal rate. Generally, thyroid hormone replacement therapy is the treatment for hypothyroidism. Anti-thyroid medications or radioactive iodine can treat hyperthyroidism.