Dear friend, welcome to HCM. there are many causes of this dizziness, imbalance. can you elaborate more as to what else happens? nausea? missed/ heavy heart beats? sweating, loss of consciousness? do you fall down? have memory of the event? it may be a heart rhythm disorder, anaemia, autonomic imbalance, neurogenic syncope etc. pl. feed more details for a better answer. I hope to have answered your query satisfactorily. Take care and please keep me informed of your progress. Good Luck ! May I request you to rate your experience here before you close. Thank you.