My situation has been ongoing for about 4 years now. It only occurs seasonally, usually between May and October, and only when I am in sleeping. My pain starts around 10-11pm. I begin to feel pain running down my legs. Later at night, I get a very painful erection. One way to relieve the pain is to get out of bed and sit upright in a chair. This seems to relive my leg pain also. I also discovered that if I massage by abdomen, approximately where my descending colon is, will also relieve the pain for a while. The pain usually subsides after 3 am.
During this time I also notice that my bowel movements have changed. They become more frequent. But the strong urge to have a bowel movement does not result in the amount one would expect. Very little comes out.
I drink plenty of water, eat foods high in fiber, cut down on red meats and nearly eliminated caffeine (only drink green tea). I exercise regularly, weight lifting and bike ride.
I have seen my regular doctor, a couple of GI specialists and a orthopedic specialist. I had a colonoscopy a few years ago, and I have had x-rays, a CAT scan and an MRI of my abdomen. The only thing that was found was a herniated disc between my L4 and L5.
I could understand if it was the herniated disc that was causing the problems, if it wasn't for a few things. Like I said, the pain only occurs when the weather starts to get warmer, and, I only have the pain when I am sleeping at night. It is fine during the day.