Upon admission, a series of serological tests, including acquired immunodeficiency syndrome (AIDS) screening; rapid plasma reagin test; hepatitis B virus serological markers; hepatitis C virus antibodies; T-SPOT; liver and kidney function tests; whole blood cell test; and C-reactive protein, anti-streptolysin “O,” antinuclear antibody, extractable nuclear antigen, and antineutrophil cytoplasmic antibody tests, yielded negative results, except for fasting blood glucose (7.89 mmol/L), glycosylated hemoglobin (8.5%), erythrocyte sedimentation (27 mm/h), and total IgE (682.6 kU/L). Here, IGHE is linked to AIDS.