Penile skin without scars but tingling is often caused by diseases, common diseases include urethritis, urethral stones, and prostate cancer. 1. Urethritis is often gonococcus or non-gonococcus bacteria caused by acute and chronic inflammation, when the causative organisms invade the patient’s urethra can lead to cellular necrosis and inflammation, thus showing frequent urination, urgency, painful urination, penis tingling and other symptoms. 2. When there are stones in the urethra, they may rub against the mucous membrane of the urethra, thus causing damage and showing symptoms such as tingling in the penis during urination. 3. Prostate cancer patients have no obvious symptoms in the early stage, with the gradual growth of the tumor, compression symptoms and the spread of cancer, patients may show symptoms such as difficulty in urination, penile pain, erectile dysfunction and so on. There are many reasons why the penile skin has no marks but tingling, when the patient is not feeling well, he should go to the hospital immediately.