The cause of the disease is unknown but there are several theories explain the disease
The first theory says that the disease is a parasitic infection of an unknown pathogen, and the authors of this theory have concluded that the disease ends alone and that it does not recur in general, and that it affects a certain age it affects children in particular, and that occurs in spring and fall and it affects society In a so-called community spread of the disease
The second theory says that the disease is hereditary, and the authors of this theory that the disease affects certain families in particular, and that affects similar twins more, and it also affects Asian people, but the disease is not contagious as it does not move from person to person, But there is genetic susceptibility to infection.