I am sorry you are experiencing these symptoms. It is very difficult to comment on such findings without a thorough in-person history and physical exam, and I encourage you to consult your primary care physician
to determine whether these are benign or something more serious.
In general, non-circumcised males are at increased risk for local infections under the foreskin, and it is important to keep this area clean and dry. Multiple studies have also found that uncircumcised men are at increased risk for HIV. Several other sexually transmitted diseases, such as syphilis or herpes, can cause skin abnormalities on the penis. Again, without knowing your full medical and sexual history, I cannot rule out these disorder, and I encourage you to consult your doctor
. After a thorough exam, you may be asked to provide a urine and blood specimen to rule out sexually transmitted diseases.
Other non-sexually transmitted skin diseases can cause a rash on your penis. This could be from trauma or bumps that were caused by scratching. In addition, exposure to chemicals in your clothing or laundry detergent can cause a dermatitis, or skin irritation. You should raise these possibilities with your physician, who can help determine the next appropriate steps.