My10 month old  son was diagnosed with coxsackie on Monday. He had a low grade fever Friday through Sunday and on Sunday came down with a rash all over his body, except for his hands and feet!  He had no fever Monday or Tuesday. Today (Wed) he is running a fever of 100.7 and is hardly drinking anything.  Is it normal for the fever to come back like this?
Coxsackie's viruses are RNA viruses that may cause hand, foot, and mouth disease (HFMD). HFMD usually occurs in child Chat Doctor.  The majority of HFMD infections are self-limited, so no treatment is required. Clinically, blisters that are painful usually on the hands, feet, and mouth in a child with fever are considered diagnostic of Cossack virus infection. However, in rare instances, viral tests can be done to identify the virus, but the tests are expensive, usually need to be sent to a specialized viral diagnostic laboratory. He is refusing to