What is piles?
Dilatation of radicles of rectal veins within the anal canal is called piles.The medical term for piles is hemorrhoids. Compared to arteries veins are weak due to thin walls and hence any back pressure in the veins can make them tortuous. There are three rectal veins namely superior, middle and inferior rectal veins. Any obstructions or increase of pressure in these veins can predispose piles.Depending upon the situation there are two types of piles.
1) External piles. 2) Internal piles.1) External piles:-
This type of piles is seen outside the anal opening and is covered by skin.It is black or brown in colour. This type of piles is very painful due to rich nerve supply in this area.2) Internal piles:-
It is inside the anal canal and internal to the anal orifice. It is covered by mucous membrane and is red or purple in colour. These piles are painless.Some times internal and external piles occur in same individual.
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