Immunoglobulins, increased
More common causes
Liver cirrhosis
Castleman disease
Hashimoto's thyroiditis
Human immunodeficiency virus type 1 infection
Rheumatoid arthritis
Sepsis and septic shock
Less common causes
Infectious mononucleosis
Primary biliary cholangitis
Sarcoidosis
Viral infections
Sjögren's disease
Infective endocarditis
Systemic lupus erythematosus
Waldenström's macroglobulinemia
Chronic lymphocytic leukemia
Atrial myxoma
Multiple myeloma
Acute phase reaction
Schistosoma mansoni
Paraproteinemia
Viral hepatitis
Idiopathic pulmonary fibrosis
Chronic inflammatory demyelinating polyneuropathy
X-linked anhidrotic ectodermal dysplasia with immune deficiency
Eosinophilic fasciitis
Chronic granulomatous disease
Hyper-IgE syndrome
Visceral leishmaniasis
Uncommon causes
Lymphocytic interstitial pneumonia
Common variable immunodeficiency
Autoimmune sclerosing pancreatitis
Tyrosine kinase 2 deficiency
Prolidase deficiency
Kostmann disease
Hyper-IgD syndrome
IgG4-related diseases
Hyper-IgM syndrome
Polyclonal gammopathy
Angioimmunoblastic T-cell lymphoma
Pharmacological causes
Omalizumab