What Causes Pulling Effect In The Spinal Cord And Memory Loss?

Hi, may I answer your health queries right now ? Please type your query here... Hi doc, i am a 28 year old male. I have been suffering from depression for last 2 years. I used to take Alporozalm .25, Serlift 50 and a drug named oleanz, Those were prescribed by a psychiatrist. I has been consuming Codeine phosphate from last one year( although i haven't had any for last 45 days. From some days i have been having strange problems. The first and the foremost is that i feel liking fire crackers are brusting inside my brain on back side near neck. It is not painful. It is a strange feeling and it gets worse when i close my eyes or move them. Like some one is pulling my spinal cord. secondly i have lost a lot of memory, also i fumble sometimes when i talk, please help