The document discusses leech therapy, including identifying leeches, preparing them for therapy, and the procedure. It notes that leeches are blood-sucking aquatic animals scientifically known as Hirudo medicinalis, whose saliva contains hirudin. Leeches are collected from western ghats and kept in clean water. They are prepared with turmeric and applied to diseased parts, where they attach via a horseshoe-shaped mouth to suck blood. Leech therapy can help with conditions like stasis dermatitis, chronic ulcers, acne, glaucoma, anal conditions, arthritis, and alopecia.