It seems to be an ordinary rash, as in many allergic reactions. The peculiarity is that it is located symmetrically on the skin surfaces. For example, if one side of the heel was affected, then after a while the same muck will appear symmetrically on the second side. The problem is its rapid distribution. Before you had time to notice the appearance of a rash on the second side, as the second leg is already affected, and possibly the hand of the hand. The disease with lightning speed affects almost all surfaces of the skin, and the large surface it is covered with a rash, the more dangerous the symptoms develop, it is almost impossible to fight it. In order to avoid such a global infection and propagation of infection, first you need to verify the accuracy of the diagnosis, provide yourself with the conclusion of medical research and only then resort to various methods of traditional medicine.