Don't think it has to do with 作息紊乱,饮食不周. However, the food that he
eats are critical.
You may start keeping a diary of what he eats and his symptoms, start with
the safest food, and gradually introducing food that could be suspicious.
On the other hand, 紫黑色 could be caused by low platelet count, which is
also often an immune-based problem. You need to work closely with your baby
's pediatrician, taking photos of his rash, and get him checked frequently.