Analysis of illness: Lotus milk refers to female breast ulceration caused by myiasis, and the point in the middle of the chest is covered with black things, which looks like a lotus. Suggestions: The prevention of dermatomyiasis is mainly to pay attention to environmental hygiene and personal hygiene, and do a good job of killing flies regularly. If you feel unwell, you should go to the dermatology department of a big hospital in time to avoid delaying treatment. Regular inspection and disinfection of clothes can be carried out if conditions permit! I wish you good health!