Suggest Medicine For PTSD, ADD And Sleeplessness

I was diagnosed with bipolar disorder 30 years ago and was on lithium...I don t remember how it affected me then. I started seeing a psychiatrist in 1986 who said I was not bipolar but was diagnosed with both PTSD and ADD for which I was given Citalopram and Ritalin in the am then lorazepam to sleep. The Ritalin affected my sleep so we stopped it, which now was not treating the ADD any more. After approx. 25-30 years (I will be 68 next month) I developed restless leg syndrome and my night med was changed to Xanax. (Over the early years I had been on other antidepressants that had too many side effects). Aug 2016 I went to a new psychiatrist who again diagnosed me with bipolar depression and am now taking 50mg Lamictal, which helps with the suicidal thoughts but also causes acne (boils) on my upper body. I tried my coming off Citalopram but nightmares came back with a rage. August 2016 Doc prescribed Ritalin again Seroquel at night. I had rage after the Ritalin wore off so stopped it again and had restless leg syndrome from the Seroquel. September 2016 he prescribed Trazadone at night but it did not help at all with getting better sleep. By this time I had cut my Xanax at bedtime from 2mg to now 1/2 mg. (My goal was to get off Xanax altogether because of it s effect on my memory) I get on average 3 1/2 to 4 1/2 hours of sleep at night. Can you give me advice on medications that would help me with sleep and also address the ADD?