The main symptoms of a male suffering from urethral stones are directly related to the size of the stones. If the stones are small, they often pass through urination, flushing out of the urethra without causing any discomfort. However, if the stones are large, they can get stuck in the urethra, causing a blockage during urination and significant pain. Some patients may experience hematuria due to the stones damaging the mucous membrane of the urethra. If the stones are large enough to cause impaction, especially complete obstruction of the urethra, this can lead to urinary retention and significant difficulty in urinating, necessitating prompt visit to the hospital's urology department for lithotripsy treatment.