Infection: Infectious mononucleosis, Recurrent herpes zoster, Chronic fatigue syndrome, Acute bacterial tonsillitis, Streptococcal toxic shock syndrome, Rheumatic heart disease, Tuberculosis, Acute vulvo-vaginitis, Cerebral malaria, Schistosomiasis;

Immunodeficiency: X-linked agammaglobulinaemia (Bruton's disease), CD40 ligand deficiency, Common variable immunodeficiency disorders [CVID], IgA and IgG subclass deficiencies, Severe combined immunodeficiency, IRAK 4 deficiency, Chronic granulomatous disease, IL-12 receptor deficiency, Isolated deficiency of complement component, Acquired immune deficiency syndrome: Kaposi’s sarcoma, Acquired immune deficiency syndrome: persistent generalized lymphadenopathy, Listeria monocytogenes meningitis after immunosuppression for SLE;

Anaphylaxis and Allergy: Wasp venom anaphylaxis, Latex-induced anaphylaxis, Drug-induced reaction, Seasonal allergic conjunctivitis, Perennial allergic rhinitis, Allergic asthma, Oral allergy syndrome, Cow's milk allergy, Nut allergy, Is this food allergy?, Chronic urticaria and angioedema, Atopic eczema;

Autoimmunity: Is this rheumatoid arthritis?, Myasthenia gravis and neonatal myasthenia gravis, Primary autoimmune hypothyroidism, IL-2 treatment and rheumatoid arthritis, Fungal infections, fits and hypocalcaemia, Lymphocyte-depleting monoclonal antibody treatments for multiple sclerosis and Graves’ disease, Guillain–Barré syndrome, Minocycline-induced systemic lupus erythematosus;

Lymphoproliferative Disorders: Acute leukaemia (common type), Chronic lymphocytic leukaemia, Sézary syndrome, Hairy cell leukaemia, Hodgkin's disease, Non-Hodgkin's lymphoma, Multiple myeloma, Benign paraproteinaemia, Waldenströms macroglobulinaemia;

Immune Manipulation: Epstein-Barr virus-induced lymphoma in a transplant recipient, Pneumocystis pneumonia complicating immunosuppressive therapy, Severe rheumatoid arthritis treated with anti-tumour necrosis factor alpha antibodies, Kawasaki's disease treated with intravenous immunoglobulin:

Transplantation: Acute rejection, Primary cytomegalovirus infection in a renal transplant recipient, Bone marrow transplantation for acute myeloid leukaemia, Graft-versus-host disease in an infant with severe combined immune deficiency;

Kidney Diseases: IgA nephropathy, Henoch–Schönlein nephritis, Post streptococcal glomerulonephritis, Membranoproliferative glomerulonephritis—type II, Anti-glomerular basement membrane glomerulonephritis, Antineutrophil cytoplasmic antibody-associated necrotizing crescentic glomerulonephritis, Minimal-change nephropathy, Membranous glomerulonephritis, Idiopathic AL amyloid, Acute tubulointerstitial nephritis, Myeloma kidney;

Joints and Muscles: Septic arthritis, Rheumatoid arthritis, Fibrosing alveolitis in rheumatoid arthritis, Ankylosing spondylitis, Reiter's disease, Behçet's syndrome, Juvenile chronic arthritis, Systemic lupus erythematosus, Mild systemic lupus erythematosus, Mixed connective tissue disease, Sjögren's syndrome, Polyarteritis nodosa, Polymyalgia rheumatica, Polymyositis;

Skin Diseases: Recurrent cold sores, Nickel dermatitis, Atopic eczema, Atopic eczema, Pemphigus vulgaris, Hereditary angioedema, Urticarial vasculitis, Mixed cryoglobulinaemia, Sub-acute cutaneous lupus erythematosus, Systemic sclerosis:

Eye Diseases: Conjunctival infection, Allergic conjunctivitis, Atopic keratoconjunctivitis, Stevens–Johnson syndrome, Behcet’s disease, Lens-induced uveitis, Reiter’s disease;

Chest Diseases: Pneumonia and chronic lymphatic leukaemia, Pulmonary tuberculosis, Sarcoidosis, Allergic bronchopulmonary aspergillosis, Extrinsic allergic alveolitis: farmers' lung, Extrinsic allergic alveolitis: bird fanciers' lung, Cryptogenic fibrosing alveolitis, Kawasaki's disease, Takayasu's arteritis;

Gastrointestinal and Liver Diseases: Pernicious anaemia, Coeliac disease, Crohn's disease, Hepatitis A, Hepatitis C-induced liver disease, Autoimmune hepatitis, Primary biliary cirrhosis, Acquired immune deficiency syndrome presenting as Salmonella enteritis;

Endocrinology and Diabetes: Graves' disease, Hashimoto's thyroiditis, Primary myxoedema, Diabetes mellitus, Addison's disease, Autoimmune male infertility, Autoimmune polyendocrinopathy;

Haematological Diseases: Primary autoimmune haemolytic anaemia, Cold haemagglutinin disease, Cephalosporin-induced haemolytic anaemia, Immune thrombocytopenia, Neonatal alloimmune diseases, Primary antiphospholipid antibody syndrome, Transmission of hepatitis C by a blood product;

Neuroimmunology: Haemophilus influenzae type b meningitis, Multiple sclerosis, Myasthenia gravis, Guillain-Barré syndrome, Chronic inflammatory peripheral neuropathy, Systemic lupus erythematosus,

Pregnancy: Listeria in Pregnancy, Hypogammaglobulinaemia of prematurity, Recurrent spontaneous abortion, Systemic lupus erythematosus, Transient neonatal Graves’ disease, Haemolytic disease of the newborn.