I was wondering if anyone else has severe orthostic and Vestibular events where they can't stand up without extreme vertigo and extreme orthostatic intolerance. The symptoms seem to be stimulated by most "M.E" related herbal/vitamin therapies such as antioxidants, b-12 and protein supplements. The symptoms appear during the night or when trying to rise for the first time in the morning. Once the attempt at standing stimulates the symptoms the patient is stuck in bed for at least 12 hours where often they cant even rotate their head nor lift their head an inch. All vestibular testing appears to be relatively normal. This particular person I am referencing also has chronic dizziness, mild vertigo and significant postural orthostatic tachycardia throughout the day for about 5 years.