Cutaneous vasculitis may be present as a significant component of many diseases such as equine viral arteritis (EVA), equine herpes virus infection, Equine ehrlichiosis, African horse sickness, Hendra disease, Venezuelan equine encephalitides, congestive heart failure and
angioneurotic edema (Del, 2000).
These allergic reactions can be severe, and cases of severe anaphylactic shock have been reported in literature.10 Figure 1 shows one of our cases who developed
angioneurotic edema after facial dermal filling of collagen-based agent.
A biochemical abnormality in hereditary
angioneurotic edema: Absence of serum inhibitor of C' 1-esterase.
Quincke's edema is an
angioneurotic edema or giant hives that differs from ordinary hives in skin defeat depth.