A verruca is a wart occurring on the bottom of the foot or toes. Verrucae are similar to calluses or corns, but can be differentiated by close observation of skin striations. They are easily spread in swimming pools or other communal areas where people are barefoot, so it's always best to cover your feet to avoid spreading the infection or picking it up in the first place. At Rosalind J Grubb - Jesmond Foot Clinic, we specialise in offering verruca treatments.