Empty fingers are not a disease, but someone put the picture of fingers together with the picture of octopus's mouth. The white circle on the finger is the octopus's tooth in the original picture, and the empty part inside is said to have rotted, which is the octopus's mouth. It is a PS spoof picture similar to Lotus Milk.

Lotus milk refers to the female breast ulceration caused by myiasis, and the point in the middle of the chest is covered with black things that look like lotus flowers. The real killer of breast ulceration is a carnivorous fly called "shield fly" (English name Tumbu fly). Myiasis may also be one of the causes of chest ulcers in the habitat of shield flies. But chest ulcers caused by shield flies are extremely rare.