Hives on the legs

Some people have “papular urticaria” in reaction to insect or spider bites. It usually affects children who have not yet developed immunity to these bites. The lesions can develop anywhere, but commonly occur on the legs.

Below are some typical features:

 The characteristic itchy red bumps, known as papules, form in clusters.

 Each papule measures 0.2 to 2.0 centimetres across and has a central point.

 They may be fluid-filled.

 New papules may appear as old ones disappear.

 A new insect bite may cause papules to reappear.

• Hives on the face

When hives results from an allergy or sensitivity reaction, it can significantly affect the face, for example, by causing swelling in the lips. The swelling can become more widespread and affect the mouth, throat, and airways. In this case, the person may find it hard to breathe. This is an emergency, and the person needs urgent medical care. They are at risk of developing a life-threatening condition called anaphylaxis.