Paraphimosis is when the penis is extruded from the prepuce and cannot be returned to its normal position. This may occur following breeding or sexual excitement such as being kenneled next to a bitch in heat, or by a traumatic fracture of the os penis. This is an emergency. Penile tissue dries out rapidly and becomes necrotic and gangrenous. Dysuria may develop from compression of the urethra.
Treatment includes cold packs to decrease swelling and lubricants.
It may be necessary to incise the prepuce to replace the penis and place a temporary purse string suture in the prepuce to prevent recurrence. Amputation of the penis is necessary if it is gangrenous. Priapism is a constant state of erection unrelated to sexual desire. Causes include spinal cord lesions, genitourinary infection, or constipation. Treatment is for the underlying cause.