Other common complications include central or peripheral nervous system involvement, hepato- and/or splenomegaly, and coagulation disorders.
[orpha.net]
Clinical manifestations of HES depend on the organ system involved, and the skin, heart, lungs, and central or peripheral nervous system are involved in >50% of patients.
[jrd.or.kr]
[…] cord (peripheral nervous system).
[rarediseases.org]