Paraphimosis Underlying Cause
Paraphimosis is caused by inflammation of the foreskin. Once the inflamed foreskin is pulled back to expose the head of the penis, it cannot be pulled back over the head of the penis.
Causes for inflammation of the foreskin include:
- Choe JM. Paraphimosis: current treatment options. Am Fam Physician. 2000 Dec 15;62(12):2623-6, 2628. 
- Mackway-Jones K, Teece S. Best evidence topic reports. Ice, pins, or sugar to reduce paraphimosis. Emerg Med J. 2004 Jan;21(1):77-8. 
- Turner CD, Kim HL, Cromie WJ. Dorsal band traction for reduction of paraphimosis. Urology. 1999 Nov;54(5):917-8.