What are the symptoms of Menière's disease? What is thought to be the cause? How common is it? How is it treated?
a) Severe vertigo, hearing loss, tinnitus; cause unknown; rare; treated with medication and dietary changes
b) Muscle weakness, joint pain, fatigue; autoimmune disorder; common; treated with physical therapy
c) Visual disturbances, headache, nausea; genetic predisposition; uncommon; treated with surgery
d) Chest pain, shortness of breath, palpitations; heart disease; very common; treated with medication and lifestyle changes