Testicular torsion usually feels like sudden, severe pain in one testicle or scrotum , often with swelling , nausea/vomiting , and sometimes pain in the lower belly or groin. The pain may come on during activity or wake someone from sleep, and the testicle can sit higher than usual or at an odd angle.

What it can feel like

  • A sharp or intense ache that starts suddenly.
  • Pain that may spread to the groin or abdomen.
  • Feeling sick, throwing up, or feeling generally unwell.
  • Swelling, redness, or one side of the scrotum looking different.

Important

Testicular torsion is a medical emergency because blood flow can be cut off to the testicle. If someone has sudden testicle pain, they should go to the emergency department right away.

If you want, I can also tell you the difference between torsion and epididymitis in a quick, easy-to-read table.