For 5-6 months, i have chronic inflammation/irritation of the foreskin, every ~30 days, no cause identified after workup (dont have diabetes either).about 2 years ago, i got chronic prostatitis, i think connected, but don't know. possible causes?

Need to examine: It is not feasible to provide a meaningful opinion without taking additional history, physical examination and may be culture from the affected area. You should consult a urologist and if need be consider circumcision. Wish you good health! - Have a diet rich in fresh vegetables, fruits, whole grains, milk and milk products, nuts, beans, legumes, lentils and small amounts of lean meats. Avoid saturated fats. Drink enough water daily, so that your urine is mostly colorless. Exercise at least 150 minutes/week and increase the intensity of exercise gradually. Do not use tobacco, alcohol, weed or street drugs in any form. Practice safe sex, if you have sex.