A hernia occurs when an internal part of the body pushes through a weakness in the muscle or surrounding tissue wall.
A hernia usually develops between your chest and hips. In many cases, it causes no or very few symptoms, although you may notice a swelling or lump in your tummy (abdomen) or groin.
The lump can often be pushed back in or disappears when you lie down. Coughing or straining may make the lump appear.
Types of hernia
Inguinal hernias
Inguinal hernias occur when fatty tissue or a part of your bowel pokes through into your groin at the top of your inner thigh.
This is the most common type of hernia and it mainly affects men. It's often associated with ageing and repeated strain on the tummy.