URTICARIA AND HIVES

Urticaria is a common cause for referral to allergy clinics.

 It is characterised by the appearance of raised itchy bumps (wheals or ‘hives’) on the skin 

You get hives when something causes high levels of histamine and other chemicals to be released in your skin. This is known as a trigger.

Triggers can include:

• eating certain foods
• contact with certain plants, animals, chemicals and latex
• cold, such as cold water or wind
• hot, sweaty skin from exercise, emotional stress or eating spicy food
• a reaction to a medicine, insect bite or sting
• scratching or pressing on your skin, such as wearing itchy or tight clothing
• an infection
• a problem with your immune system
• water or sunlight, but this is rare