I was diagnosed this past week with PR. I am a 48 yr. old male and have had bouts with this since my early twenties. I currently have spots/lesions that cover my entire torso, and upper arms. I can also feel them in my scalp and around my hairline especially on the back of my neck. The itching is intense where my clothes rub e.g. neckline and sleeve openings and on the upper center of my chest.
PR seems to attack me when I gain weight, eat a lot sugar, have higher than usual stress and when I don't get enough sleep. I have been able to keep it under control by maintaining my weight and really reducing the amount of sugar. Soda pop, even diet soda, seems to make it worse. I suspect also caffeine plays a significant role. I notice an almost immediate increase in itching and inflammation when I eat anything that is high in sugar. I love chocolate and honey (assorted candy bars, doughnuts, pastries -baklava, PB&H sandwiches etc.)
I am presently using a steroid cream to reduce the itching and the spots but this is temporary. I have also used zyrtec (antihistimine) but I use the smallest dose I can because it makes me drowsy. I get the most benefit from cutting a 10 mg tablet in half and using it just before bed as this helps reduce the itching and keep me asleep.
Zinc soaps, coal tar shampoos and products like selsun blue seem to inflame this condition and I don't recommend them. In the past, I have let PR run it's course. This time, it is too severe and I am ready to try almost anything as the itching is driving me crazy and after I shower the spots are more noticeable and I look and feel like a defective human being. Hot showers/baths only inflame PR. I am also taking an acidophilus/pro-biotic, and an herbal anti-viral/anti-fungal. I don't drink alcohol or smoke. From past bouts with PR, I think the best medication however is to avoid sugar and caffeine while strengthening my immune system.
As soon as I can get to a tanning bed I will give that a try. Several people have had positive results and I suspect it will be very helpful as the spots tend not be be as prevalent where my skin comes in contact with light. Fall and winter are the worst times for me. I will provide follow-up over the next few weeks