Monday, August 25, 2014

COMMON CAUSES OF URTICARIA

URTICARIA MAY BE ACCOMPANIED BY ANGIOEDEMA AND ANAPHYLAXIS : 

Blood products: red cells, platelets, gamma globulin

Drugs : 

Antibiotics: penicillins, cephalosporins, sulfonamides, isoniazid
Aspirin: salicylates, benzoates, phenylbutazone
Anticonvulsants: hydantoin
Chemotherapy: doxorubicin, daunorubicin, L-asparaginase, chlorambucil,
cyclophosphamide, melphalan, methotrexate, nitrogen mustard, procarbazine
Dextran
Nonsteroidal anti-inflammatory drugs
Opiates
Quinidine
Radiocontrast dyes, iodine
Environmental: animal dander or proteins, formaldehyde, pollen, mold, plants, latex,plastic tubing, exercise, heat, cold, sunlight

Foods: berries, eggs, milk, nuts, tomatoes, shellfish, soy

Food additives: sodium benzoate, tartrazine (yellow dye #5)

Hormones
Infections: streptococcal, staphylococcal, sinusitis or abscesses, viral hepatitis,
Epstein-Barr virus mononucleosis, Candida species.

Insect bites or venom: Hymenoptera, mosquitoes, mites, scabies.

Mechanical stimuli (dermographism, vibratory angioedema, delayed-pressure urticaria)

Vaccines

URTICARIA-LIKE ERUPTIONS AND REACTIVE ERYTHEMAS: 


Erythema multiforme: herpes simplex, DNA viruses, Mycoplasma pneumoniae, drugs

Erythema marginatum: streptococcal rheumatic fever , Juvenile rheumatoid arthritis

Erythema chronicum migrans: Borrelia species infections

Erythema annulare centrifugum: tinea, drugs

Figurate erythemas: erythema repens (often with underlying carcinoma) , Urticaria pigmentosa (mastocytosis)


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