Hello! Welcome on HCM! I understand your concern and would explain that her symptoms could be related to a post-mixional syncope (if they occur only after urinating) or to epilepsy seizures. Does she lose her conscience during these episodes? Does she remember the circumstances in which these episodes have occurred? Vertigo is a diagnosis based on episodes of dizziness and motion sickness. This disorder is not usually associated to loss of conscience. From the other hand some epilepsy seizures are associated to dizziness before the seizure. That is why I would recommend consulting with a neurologist for a physical exam, an EEG and a brain MRI to exclude this possibility. A head Up Tilt test would help exclude possible orthostatic intolerance, associated to post-mixional syncope. You should discuss with her doctor on the above issues. Hope you will find this answer helpful! Best wishes, Dr. Aida