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What Is It?
Priapism is an abnormally prolonged and often painful erection. This erection may not be related to sexual desire or stimulation. It often won't be relieved by orgasm.
Priapism may start after prolonged sexual activity, although this by itself is not believed to cause priapism. Most men seek medical attention within hours to days, but a few people may have a partial erection that persists for weeks.
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