Hello, Thanks for choosing health care magic for posting your query. I have gone through your question in detail and I can understand what you are going through. The condition you are describing is also called derealization and it is a very disabling symptom. Although there are many medical causes like epilepsy or electrolyte imbalance which can cause this phenomenon, by and large the most common cause is depression. Epilepsy can be ruled out by doing an EEG during such periods and electrolyte imbalance can be ruled out by simple blood tests. There are various effective therapies for depression like fluoxetine, venlafaxine, bupropion, mirtazapine or escitalopram and they are all very effective and mostly safe. You may also require some benzodiazepines like clonazepam or lorazepam for a short period like 2-3 weeks to reduce the anxiety and help with your sleep. Hope I am able to answer your concerns. If you have any further query, I would be glad to help you. In future if you wish to contact me directly, you can use the below mentioned link: bit.ly/dr-srikanth-reddy Wish you good health, Kind regards Dr. Srikanth Reddy M.D.