Persistent priapism is due to?
Priapism refers to a persistent (> 4 hours) and painful erection. It is occurs due to: An excessive release of neurotransmitters Blockage of draining venules (e.g., mechanical interference in sickle cell crisis, leukemia, or excessive use of intravenous parenteral lipids) Paralysis of the intrinsic detumescence mechanism Prolonged relaxation of the intracavernous smooth muscles (most often caused by the use of exogenous smooth-muscle relaxants such as injectable intra-cavernosal prostaglandin E1).
Sickle cell anaemia
Hairy cell leukaemia
Paraphimosis
Urethral stenosis
Sickle Cell Disease, G6PD deficiency and other Hemolytic Anemia