Question: I have a very dark red, sometimes purplish colour ring around the opening of my anus. I’m too scared to go to the doctor in case it might be cancer. I’m extremely worried I’m going to die!
There are many possible explanations for the discolouration around your anus, that vary from dermatitis, to fungal infections and piles; but the most likely explanation is that you are seeing a prominent vein that normally runs around the anus. Trying to diagnose your condition without seeing the relevant part of your anatomy, is rather like trying to play chess without being able to see the board— very difficult and liable to be wrong!
You are foolish not to consult your GP if this is worrying you so much. It is extremely unlikely to be anything serious, and your doctor can therefore give you a large dose of reassurance, and if necessary, the appropriate medication to cure the problem.
In the unlikely event that it is a significant problem, seeing your doctor sooner rather than later will make the problem far easier to cure. Embarrassment is no excuse, as both male and female doctors are readily available, and both ate very used to examining the most intimate parts of your anatomy without blushing, making sexist remarks or rude jokes.

Question: In what way can piles be treated? I suffer terribly from this embarrassing condition.
Initial treatment involves creams or suppositories that soothe and shrink the piles. There are many types of creams available, some from chemists and others on prescription.
If these are not successful, the next step may be a simple incision of a thrombosed pile, injecting a glue like liquid into the pile or clamping a rubber band around the pile under local anaesthetic.
If these measures lead to recurrences, a formal operation to remove the segment of the anus involved may be required. These operations are uncomfortable, but not as painful as gossip and the imagination would have us believe. The most important treatment is prevention—do not get constipated!