Although piles develop from inside your anal canal, they can hang down out of your rectum. They are graded as follows.

* First degree piles are swellings on the inside lining of your anal canal. They may bleed but can't be seen from outside the anus.
* Second degree piles are larger and stick out (prolapse) from the anus when you have a bowel movement, but return on their own afterward s.
* Third degree piles are similar, but hang out from your anus and only return inside when pushed back in.
* Fourth degree piles permanently hang down from your anus and you can't push them back inside. They may become extremely swollen and painful if the blood in them clots.
* External piles are swellings that develop from below the anal cushions. They can be more painful than the other types of piles.

Other causes of lumps around the anus can include a sentinel pile, which is the painless skin tag that develops when a crack in the anus (an anal fissure) heals up.

Can u post the treatment and prevention of these piles?