Causes of Urticaria Immunoglobulin E (IgE) mediated - Aeroallergens - Contact allergen - Food allergens - Insect venom - Medications - Parasitic infections Non-IgE immunologically mediated - Aeroallergens (proteases) - Autoimmune disease - Bacterial infections - Cryoglobulinemia - Fungal infections - Lymphoma - Vasculitis - Viral infections - Nonimmunologically mediated - Contact allergen - Elevation of core body temperature - Food pseudoallergens - Light - Mastocytosis - Medications (direct mast cell degranulation) - Physical stimuli (cold, heat, pressure, vibration) - Water #Diagnosis #Differential #Urticaria #IgE #Mediated #NonIgE #Causes
