Suggest Treatment For Psoriasis

Am a 62 year old male with a polyglandular diagnois I have lived with for 30 years. I have a hypothroid condition and take Synthroid for it daily I also have had psoriasis for the past 15 years....controlled with Stellara injections and over counter lotions I of course have very low testosterone, supplemented by a lotion I use daily and ED that I manage using Viagra. What concerns me is that I have had recent episodes of imbalance even while sitting down. Like a 5-10 second surge that scares me.....makes me very dioriented but last just seconds. Seems to be worse when I am tired ,,,,,stressed or anxious. I feel its more than anxiety or panic attacks Worry I could have some sort of blockage in my brain.....or tumor... My primary is dismissing it that I have too much stress and gave me pills for anxiety.....not helping Last symptom ....constantly dehyrated.....my optomitrist says I have dry eyes also. Thinking of asking primary for CT scan or MRI to rule out tumor, blockage. No family history of such disorders.......Am scared....hope you have some ideas.