I'm pretty convinced I have anal cancer. My symptoms are: abdominal pain, which is particularly bad in the lower-left area; occasional blood in the TP or in the water, soft/messy/ill-formed stool -- which was thinner than usual today; and feeling like I have to go #2 a lot, but usually nothing comes out.
I'm a 30 year old male and I had a colonoscopy last December. It was clear for colon cancer but I was diagnosed with an internal hemorrhoid. Symptoms mostly abated for the 6 months after that, though I would sometimes get nasty abdominal cramps when running. The last few weeks, it's all gotten much worse.
I'm worried about anal cancer for a very specific reason: Years ago, I had a case of pubic lice and became convinced it had invaded my anal area (even though there's not really any hair there -- I was an idiot). So I treated the area daily with RID lice shampoo. The itching/sensation that something was there wouldn't go away, so I kept treating it for like 6 months. I would just coat the anal area with the shampoo. I thought the only risk was skin irritation, which I didn't really get. I know how weird and stupid this sounds, believe me. Ultimately I went to a doctor (had been too embarrassed) who told me there was no lice up there -- and of course the itching quickly went away and that was that.
Anyway, having these symptoms recently has made me think back to that. And now I realize that the chemicals in RID might be dangerous. They are basically pesticides, maybe carcinogenic. And I applied them directly to my anal area for months about 8 years ago. I'm convinced this caused anal cancer to start growing and that the "internal hemorrhoid" that was found on the colonoscopy was actually a tumor. (I've read that this mistake happens sometimes.
I went to my gastroenterologist and told him about this. He said he wasn't too worried, looked at the colonoscopy images again, and said he can't ever guarantee anything, but that he didn't think it was a tumor. Then he performed a DRE and said there were no signs of a tumor. He then referred me to a rectal specialist who, he said, can perform more invasive tests for anal cancer -- an anoscopy, I think. I'm going on Wednesday (day after tomorrow -- the wait is brutal). He said he was doing this for my peace of mind. But these symptoms just seem way too specific and way too severe, and the memory of how I treated myself with RID just haunts me. I have an awful feeling that I gave myself anal cancer.
I doubt anyone here has ever heard of a situation like this before. But I'm going out of my mind with fear and if anyone has any thoughts, I'd love to hear them. And feel free to call me an idiot for what I did....