Dermatographism
The term dermographism (or dermatographism) literally means writing on the skin. Firm stroking of the skin produces an initial red line (capillary dilatation), followed by an axon-reflex flare with broadening erythema (arteriolar dilatation) and the formation of a linear wheal (transudation of fluid/edema); these events are collectively termed the "triple response of Lewis". Who are susceptible? 🤔 Dermographism is the most common of the physical urticarias with an increased incidence during pregnancy (especially in the second half), at the onset of menopause, in atopic children, and in patients with Behçet disease. Rx? Dermographism can be treated by substances which prevent histamine from causing the reaction (i.e. an antihistamine).
Isn't this also reffered to as dermagraphic urticaria?
