The piles is derived from the word ‘pila’, means ball. Piles is ball like swelling in the anal canal. It is divided into two categories.
The dilated rectal veins due to straining, situated above the pectinate line inside the anal canal is called internal hemmorrhoids. As patient strains at stool, hemmorrhoidal veins bulges out along with its covering.
As the disease progresses, it is divided into 4stages or grades. And that decides the treatment modality as per the stages.
It is initial stage of piles, in which rectal/ hemmorhoidal veins get dilated by straining at stool along with its mucous covering but remains at its site.
As straining at stool continues along with constipation,further dilatation and mucus covering are get prolapsed
When straining at stool and constipation continues.pile mass protrude further mucosal coverings with haemorrohoids plexus come out with defecation and has to reduce with the help of finger
In this grade prolapsed pile mass remains outside the anal verge and obstruct the passage