See a dermatologist. Psoriasis affects men and women equally and has a bimodal age distribution (peaks between ages 20 to 30 years and again between the ages of 50 to 60). Best thing to do is to see a dermatologist to have an accurate diagnosis and then get appropriate treatment.
Rash. A dermatologist consult can be helpful in diagnosing your rash.
Check it out. Well, it may be psoriasis but may be something else, too. Won't you make a trip to your doctor and have him look at this and decide what treatment you will need.