Few months ago, my friend has to rush back from work to send her mother to the emergency room. Her mom had very bad case of dizziness and literally collapsed on the floor, with difficulty to get up.
They spent a few hours in the hospital undergoing tests and scans. The doctors could not find any serious medical condition in her mother. She was given medication that was similar to treat travel sickness and was sent home. Eventually she turned to traditional treatment and have not had vertigo since.