Penile pain refers to pain in the penis, human or otherwise. Common causes
Penile injury
Circumcision
Penile fracture
Priapism
Phimosis
Peyronies disease
Sexually transmitted infections
Chronic prostatitis/chronic pelvic pain syndrome

Cultural references
Priapus, a minor Greek god of fertility, is marked by his oversized, permanent erection, which gave rise to the medical term priapism. Some researchers believe the depiction of Priapus penis referred to a penile disease, and that paintings of Priapus were used to ward off the disease. See also
Genital pain
Vaginal pain
Testicular pain
List of the causes of genital pain


== References ==
Today, Doppler ultrasound is a common test: it can demonstrate areas of blood flow and can distinguish clearly between epididymitis and torsion. However, as torsion and other sources of testicular pain can often be determined by palpation alone, some studies have suggested that the only real benefit of an ultrasound is to assure the person that they do not have testicular cancer. : p.237  Nuclear testicular blood flow testing is rarely used.Additional tests may be necessary to identify underlying causes. In younger children, a urinary tract anomaly is frequently found. In sexually active men, tests for sexually transmitted diseases may be done. These may include microscopy and culture of a first void urine sample, Gram stain and culture of fluid or a swab from the urethra, nucleic acid amplification tests (to amplify and detect microbial DNA or other nucleic acids) or tests for syphilis and HIV. Classification
Epididymitis can be classified as acute, subacute, and chronic, depending on the duration of symptoms. Chronic epididymitis
Chronic epididymitis is epididymitis that is present for more than 3 months. Chronic epididymitis is characterized by inflammation even when there is no infection present. Tests are needed to distinguish chronic epididymitis from a range of other disorders that can cause constant scrotal pain including testicular cancer (though this is often painless), enlarged scrotal veins (varicocele), calcifications, and a possible cyst within the epididymis. Some research has found that as much as 80% of visits to a urologist for scrotal pain are for chronic epididymitis.