Hmmm . . . a few more details would be helpful, like when, where, duration, etc. While bleeding from the penis can be benign, it's best to check in w/your family physician to make sure there's nothing else involved. If there's localized discomfort above his pubic bone accompanied by painful urination, bladder infections can cause bloody urine. If there's sharp excrutiating pain anywhere from his back down along his flanks down to that same pubic area, it could be due to a kidney stone moving along. Kidney infections, presenting similarly to bladder infections, but usually accompanied by fever, sweats, chills & back pain, can also cause blood in the urine. Bladder cancer presents as painless blood. Trauma should be self-evident. But as mentioned initially, it's best to have him evaluated by his family physician who can elicit all the necessary details and perform all the required tests.
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