Can vasectomy cause serious side effects?
In some cases, vasectomy can cause more serious side effects and complications including:
Haematoma - a blood clot which can form in the scrotum, varying in size from that of a pea to a larger clot that fills the scrotum. This can cause severe pain and swelling in the scrotum which may require surgery.
Sperm granulomas - sperm can sometimes leak from the vas deferens when they are cut and rarely the sperm can collect in the surrounding tissue and form hardened lumps. Sperm granulomas are not typically painful but they can cause your scrotum to become swollen. This swelling can usually be treated with anti-inflammatories prescribed by your doctor. If the lumps are painful or very large then surgery may be required to remove them.
A full feeling in the testicles - some men may experience a feeling of ‘fullness’ in their testicles after vasectomy, caused by a build-up of stored sperm in the tube that runs along the rear of each testicle (the epididymis). This usually resolves on its own after a few weeks, but if your testicles still feel full after this time, talk to your doctor.