Explanation: Urticaria, also known as hives, is an outbreak of swollen, palered bumps or plaques (wheals) on the skin that appear suddenly -- either as a result of the body's reaction to certain allergens, or for unknown reasons. Hives usually cause itching, but may also burn or sting.
8-year-old has been stung by a wasp. His skin is pale with patches of raised red spots on his hands, arms, and face.
That means that you can't in any way test or see or smell the service but rather you have to rely on the provider's promise that it will be so. That's why it is intangible.
