dear sir iam 42,when i was 29 i had problem of loosing balance,when i lay down in the bed at night. it was like spinning.then i consulted a doctor and advised me vertin 16 tab for 10 days. and i felt ok.After 4 years i got the same problem and consulted the same doctor and asked me to take some blood tests and advised me the same medicine.and told me it was the problem in the ear and i felt ok then. Actually have been traveling from sea level to 1500ft high place everyday 4hours(up and down) for my job since last 4 years.Now i feel loosing balance while looking down. Sir is it a serious problem? I beg your valuable advice.
Thank you for asking Chat Doctor.  My name is Chat Doctor.  As the scenario explained by you, the most probably cause of your vertigo is ensnares disease(related to ear).  Yes this is serious problem if not get treated on time and if treated It's nothing just like blood pressure and diabetes problem.  So I would like to suggest you to visit ENT consultant and get the underlying cause of this problem so that you can enjoy comfortable life ahead. Hope this may help you. Let me know if anything is not clear. Thanks.