Table 2.

Definitions of benign anal diseases (BAD)

Anal lesion [Reference]	Definition, Illustration
Haemorrhoids 13	"Haemorrhoids (or piles) are displaced anal cushions. Haemorrhoids should not be diagnosed unless prolaps or bleeding is a dominant symptom, in conjunction with visible distended or displaced anal cushions on anoscopy." (figure 1)
Fissure-in-ano 16	"A fissure is a split in the lower half of the anal canal extending from the anal verge toward the dental line." (figures 2 and 3)
Thrombosed external haemorrhoid 13	"Localised thrombosis which may affect the external plexus". (figure 4)