Scrotum and penis redness and itching, what tests should be done? I have checked.

Patient's question:

Testicular penile red itching what should be checked carefully I checked the prostate and there was no problem except for the redness of the urethral mouth I also checked the urine routine and it was fine

Doctor's answer:

There is redness, swelling, and itching, which is a typical symptom of inflammation. It can be resolved by cleaning with povidone-iodine and soaking in potassium permanganate solution. Additionally, medication can be taken for treatment, and drinking more water is beneficial for a full recovery. If this condition reoccurs, it is often caused by conditions such as dermatitis and can be treated with topical medication or by visiting a dermatology department for examination and treatment. Avoid spicy foods and maintain good hygiene.
For patients with prostatitis, in addition to professional medical treatment, dietary therapy can be used as supplementary treatment in daily life. It is essential to avoid extreme hunger or overeating and never binge on food in daily eating habits.