Phimosis: A condition in which the foreskin of the penis is too tight to be pulled back to reveal the glans. This usually causes no problems and nothing needs be done. If phimosis causes obstruction of the urinary stream, meaturia (blood in the urine), or pain, this can require surgery to relieve the phimosis. Circumcision prevents phimosis.
Quick GuideErectile Dysfunction (ED) Causes and Treatment
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