NCIthesaurus has symptom disease has feature hypersensitivity reaction type IV disease chronic NK-cell lymphocytosis A hypersensitivity reaction type IV disease that is characterized by absolute lymphocytosis of natural killer (CD3- CD16+) cells often with concurrent cytopenia and has_symptom fever, arthralgia, apthous ulcers, vasculitic skin rash, and peripheral neuropathy. SNOMEDCT_US_2025_09_01:722955006 DOID:7465 NCI:C39591 disease_ontology UMLS_CUI:C1512709 NK-cell large granular Lymphocyte Lymphocytosis neuropathy joint pain mouth sore fever cytopenia apthous ulcer