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