Vi) Heat: Extreme temperatures as of hot food, objects, sun where direct exposure on the skin makes it react. · Acute;itcommonly appears a few minutes after coming into contact with specific allergens lasting a few hours, days to several weeks. Autoimmune: it occurs as the body experiences the autoimmune disorder while combating alien elements in the body. · Chronic form; it refers to any form that persists for 6 weeks or more. The chronic form is more disturbing and lasts for more than six weeks. Most of the acute forms are caused by allergy or allergens that are inhaled, ingested or comes into contact with the skin. The Amaryl an anti-diabetic sulphonylurea glimepiride has been proved to bring about allergic reactions resulting into urticaria condition. In simple classification urticaria is grouped into; acute and chronic but in each category there are sub grouping which are causes by different factors. · Physical; this is the urticaria resulting from direct physical stimulation of parts of skin. V) Dermatographic: This commonly happens when the skin is scratched or injured in the course of working. Physical forms are often classified into the following groups: i) Aquagenic: This the reaction to water (rare) to water either due to extreme temperature or compounds or chemicals incorporated into the water. Other risky medications include dextroamphetamine, aspirin, penicillin, clotrimazole, sulfonamides and anti-convulsants. Below are some of the common forms that attack majority of the patients; · Ordinary form; it appears suddenly without any specific reason. 2. Vii) Vibration: This is rare where the body is irritated by continued vibration of machines. Its causes are on non-allergic factors as viruses.