Hyper-IgD syndrome (HIDS) is a autosomal recessive (which means that while the child is sick neither parent needs to show symptoms of the disease) genetic syndrome that results in episodic high fever with skin rash, swelling of lymph nodes (glands that are part of the immune system) in the neck, abdominal pain, vomiting and diarrhea. The disease starts early in infancy. The name of this disease comes from the fact that most patients have very high amounts of immunoglobulin (proteins that are part of the immune system) of type D. The most severe form of this disease starts at birth and is called mevalonic aciduria. These patients also have neurologic (nervous system) disease and suffer from poor growth.
The Cleveland Clinic