The symptoms of a ventral hernia includes a lump or bulge in the abdomen that gradually increases in size, according to the University of California San Francisco Medical Center. Lumps caused by a ventral hernia tend to disappear when patients are lying down but enlarge when pressure is put on the abdomen or when standing, lifting or pushing an object. Ventral hernias also cause constipation, nausea, vomiting and pain in the abdomen when tissue is trapped in the abdominal muscle.
In extreme cases, a ventral hernia can cause blood supply to the bowels to become reduced or cut off, which results in bowel tissue rupturing or dying, explains UCSF Medical Center. Symptoms resulting from reduced blood supply include rapid heartbeat, high fevers, severe nausea and vomiting, profuse sweating and severe pain in the abdomen.
Hernia symptoms occur when the hernia that has developed in the abdominal wall causes a tear or hole due to the weakened tissue, according to UCSF Medical Center. Pain occurs when portions of the intestines or abdominal tissues push through weakened areas of the abdominal wall. Ventral hernias can develop as a birth defect or as a result of incisions made and poorly healed during and after abdominal surgery.