First some background:
I am male, 26, regular smoker, occasional drinker, athletic and regular exerciser. I am not currrently taking any medications, nor have I in the last few years. Family history includes diabetes, heart disease, stroke, lung and prostate cancer.
Approximately 1 year ago I started having occasional blood in my stool. During this year diarrhea has come and gone with high frequency.
I travel often for work, and this usually upsets my body for a week afterwards between the jetlag and adjusting to the local diet. Therefore, at first I discounted the increased frequency of diarrhea as a symptom until it started persisting longer each time.
Severity of the blood in stool has rised and fallen over this time. I have never had blood in the underwear, though often on toilet paper, and anal itching affects me occasionally.
I got scared into action last week when I noticed a hardened lump between the anus and the scrotum. This lump seemed to appear overnight, without cause, and I do not know if it is related to the anal bleeding or diarrhea.
Over the last week its firmness has seemed to decrease though not its size. It does not hurt, and is normally unnoticeable, though it is very sensitive when wiped with toilet paper.
There are no other symptoms which I have noticed. I have occasional joint stiffness, congested nose, and increased sleep apnea, but I don't believe any of them to be connected with this.
I intend to see a doctor immediately for a diagnosis when I return to my country of residence next week, but this has me very worried and I would like to hear the opinions of this forum.
Any questions, post here and I will answer them. Any feedback is welcome. Thanks.