Hello and Welcome to ‘Ask A Doctor’ service. I have reviewed your query and here is my advice.. Firstly, what s the duration of suffering from bipolar, obsessions and Memory impairment... If the suffering from above symptoms is from long duration and if your husband is on medications, the memory impairment might also be due to medications.. if the memory impairment has been started very recently and suddenly, then it should be thoroughly evaluated... if all the above symptoms are recently detected, there might be lesions in the anterior part of the brain that is frontal area which causes behavioral abnormalities and another possibility is to have lesions in the temporal area that is on the right side of the brain which can also cause behavioral abnormalities... there is a simple test known as Mini mental status examination which can be used to measure level of memory impairment which even a non-medico can perform, surely you can try this at home, it gives a rough assessment...(available as PDF in Google)... Anticholinergic drugs like trihexyphenidyl if used on long term basis there might also be memory impairment... So, plan accordingly mam... hope I solve your query and feel free to ask any further... all the best for your future endeavours... Thank you...