Can you have itching and no welts in an allergic reaction?

It is possible to have itching without welts in an allergic reaction. This can occur in a number of different allergic reactions, including contact dermatitis and hives. In contact dermatitis, the skin becomes inflamed and itchy when it comes into contact with an allergen. In hives, the body releases histamine, which causes the skin to become itchy and swollen. In both cases, welts may not be present.

In addition, some people may experience itching without welts as a result of a food allergy. This is known as oral allergy syndrome, and it occurs when the body produces antibodies to certain proteins in food. When these proteins are consumed, the antibodies can bind to them and cause the release of histamine, which leads to itching.