Minimum of 300 words with at least two peer review referense in 7th edition apa style

 Outline typical presentation, etiology, common differential diagnosis, typical diagnostic work-up, treatment plan, preventative measures, appropriate referrals, screening tools/diagnostic specific scales/tools (if any), and additional information that would be important to the geriatric population regarding the following conditions. Highlight differences in presentation of adult versus geriatric patients with this diagnosis. 

 Psoriasis