ACR Criteria for the Classification of Polyarteritis Nodosa (PAN)

American College of Rheumatology 1990 criteria for the classification of polyarteritis nodosa (PAN). Classified as PAN if at least three of the 10 criteria are present:

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Classification Criteria for Osteoarthritis

ACR Classification Criteria for Osteoarthritis of the Hip


Traditional format

Hip pain plus at least two of the following:

  • ESR of less than 20 mm per hour

  • Femoral or acetabular osteophytes on radiographs

  • Joint space narrowing on radiographs

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Classification of Neutrophilia

Primary (no other evident associated disease)

    • Hereditary neutrophilia
    • Chronic idiopathic neutrophilia
    • Chronic myelogenous leukemia (CML) and other myeloproliferative diseases
    • Familial myeloproliferative disease
    • Congenital anomalies and leukemoid reaction
    • Leukocyte adhesion deficiency (LAD)
    • Familial cold urticaria and leukocytosis

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Classification of Neutropenia

Acquired neutropenia

    • Postinfectious: varicella, measles, rubella, hepatitis A and B, mononucleosis, influenza, cytomegalovirus, parvovirus, acquired immunodeficiency syndrome (AIDS), S. aureus, brucellosis, tularemia, rickettsia, Mycobacterium tuberculosis, sepsis.
    • Drug induced: Antineoplastic agents, procainamide, antithyroid drugs, sulphasalazine, phenothiazines, semisynthetic penicillins, nonsteroidal anti-inflammatory agents, aminopyrine derivatives, benzodiazepines, barbiturates, gold compounds, sulfonamides, propranolol, dipyridamole, digoxin, acetyldigoxin, sulfamethoxizole, anticonvulsants
    • Benign familial neutropenia
    • Chronic benign neutropenia of childhood
    • Chronic idiopathic neutropenia
    • Autoimmune neutropenia
    • Isoimmune neutropenia
    • Neutropenia associated with immunologic abnormalities
    • Neutropenia associated with metabolic diseases
    • Neutropenia due to increased margination
    • Nutritional deficiency

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FAB Classification of Myelodysplastic Syndromes (MDS)

Refractory anemia (RA).

  • Cytopenia of at least one lineage in the peripheral blood (usually anemia)

  • Normal or hypercellular bone marrow with dysplastic changes

  • Less than 1 percent blasts in the peripheral blood and less than 5 percent blasts in the bone marrow

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WHO Classification of Mastocytosis

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Classification Criteria for the Diagnosis of Systemic Lupus Erythematosus (SLE)

Systemic lupus erythematosus (SLE) is a chronic autoimmune disease of unknown cause that can affect virtually any organ of the body. Immunologic abnormalities, especially the production of a number of antinuclear antibodies (ANA), are a prominent feature of the disease. Continue reading

Child-Pugh Classification of Severity of Liver Disease

Modified Child-Pugh classification of severity of liver disease according to the degree of ascites, the plasma concentrations of bilirrubin and albumin, the prothrombin time, and the degree of encephalopathy.

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ICSD Revised Classification of Adult Insomnia

Primary Insomnia

  • Idiopathic insomnia: Insomnia arising in infancy or childhood with a persistent, unremitting course
  • Psychophysiologic insomnia: Insomnia due to a maladaptive conditioned response in which the patient  learns to associate the bed environment with heightened arousal rather than sleep; onset often associated with an event causing acute insomnia, with the sleep disturbance persisting despite resolution of the precipitating factor
  • Paradoxical insomnia (sleep-state misperception): Insomnia characterized by a marked mismatch between the patients description of sleep duration and objective polysomnographic findings Continue reading

JNC-VII Classification and management of blood pressure for adults

The classification is based on the average of two or more properly measured, seated blood pressure readings on each of two or more office visits.

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