lymphocytopenia

synonym: lymphopenia
https://doi.org/10.1351/goldbook.13409
Deficiency of lymphocytes in the blood compared with normal values.
Note: This is a characteristic feature of systemic autoimmune diseases [e.g., systemic lupus erythematosus (SLE), Sjögren syndrome, mixed connective tissue disease (MCTD)].
Source:
PAC, 2012, 84, 1113. (IUPAC glossary of terms used in immunotoxicology (IUPAC Recommendations 2012)) on page 1206 [Terms] [Paper]