This is seen due commonly due to deficiency of:

* The given picture shows lesions at angles of mouth (angular cheilitis)- deficiency of vitamin B2 (Riboflavin). * Other features of vitamin B2 deficiency include glossitis, magenta tongue and geographic tongue . * Also have Corneal vascularisation * Image showing corneal vascularisation in vitamin B2 deficiency Cassal necklace--> niacin def. Acrodermatitis enteropathica--> zinc def. Xanthurenic aciduria--> Pyridoxine def.