Hemmorhoid is..

Widening of haemorrhoid  venous net and blood delay on anal passage and under mucus membrane of low side as duct. 
Acute disease in hard stool, over eating, peregnancy, and reasons are inborn weak of venouse apparatus, wek mode of life, internal glands secretion disordering, physical load bad, bowel diseases, alchokolism, addected of laxatives, infections.
Symptoms are ache stool, burning, bleeding, nodules falling out.
Herbs use  are long time.