Lotus milk refers to cutaneous fly maggot disease, which is very rare, and it is spread mainly in some hot and humid areas of Africa. Fly maggot disease is a disease caused by the parasitization of maggots, the larvae of flies, on human or animal bodies. The main symptoms are mechanical irritation of the host or patient by the maggot flies. The patient may feel a tingling, itching, foreign body sensation, and shifting sensation in some part of the body. For example, patients with nasal maggot disease may sneeze and feel a foreign body sensation in the nose. Genitourinary maggot disease patients will feel the lower abdomen, urethra, vagina, tingling sensation, migratory sensation, urinary frequency, urgency, urinary pain.