65 year old Vietnam combat veteran diagnosed with PTSD was given Zyprexa, Seroquel and Lexapro for 12 years and was very slowly weened off of said meds due to developing prediabetes 14 months ago is just now regaining his long-term memory and has developed extreme mania for the past 60 days (delusional mania for 10 of those days). Can this mania possibly be related to stopping those drugs this many months later?