DGHAL (Doppler Guided Haemorrhoidal Artery Ligation) is a surgical procedure used to treat hemorrhoids. It is a minimally invasive procedure that uses a special tool called a Doppler probe to locate the blood vessels feeding the hemorrhoid and then ligates (ties off) those vessels to reduce blood flow to the hemorrhoid. This causes the hemorrhoid to shrink and eventually fall off. DGHAL is usually performed as an outpatient procedure and recovery time is relatively short compared to traditional hemorrhoidectomy.