question: My son who will turn 5 next month has a pain in this lower left abdomen. This is not the first time he has gotten this pain. It has in the past just disappeared after a number of hours. The pain is severe enough. When he walks he turns his left knee in and slightly leans over to help ease the pain. The pain is concentrated in the lower left and is painful when touched. He also feels pain when touched further up the left side of his stomach. He has a high pain threshold and as a result this pain does not interfere too much as long as he remains seated or crouched. I m not sure if this is related, but he started wetting last summer, mainly at night but sometimes during the day.