There are two types of Hives;
Acute and chronic utricaria. In order to understand how this severe allergy can be avoided, it is important to learn about the disease itself. Acute Utricaria: The size of these red welts or blotches on the skin may vary from a few millimeters to inches or the size of a fist. Utricaria can affect any part of the body and the span of this rash or allergy can be 24 hours and sometimes it could be more if the skin is sensitive or proper measures are not taken to prevent it.
Chronic Utricaria is a term used to describe hives which last longer than six weeks. This rash is very rare and 1 in every 1000 people develops this rash at some point of their life. Women are more prone to it as compared to men. This kind of rash lasts for months with dormant periods in between. It is not triggered by external factors like environment or climate but food products like caffeine and alcohol along with extreme emotional stress and prolonged pressure on the skin caused by tight cloths and painkillers are some major contributors.