Angiitis.. Large and complex necrosis of small blood vessels

Angiitis:
Systemic vasculitis is extensive and complicated necrosis of small blood vessels.
the reasons:
Several factors are thought to cause systemic vasculitis and include:
Drugs: The most common medications that may cause such are: sulfonamides, salicylic acid (aspirin), phenothiazines and barbiturates.
- Infections: Streptococcal infections of the sternal skin lesions Infection of the upper respiratory tract.
- Insecticides: Algae killers.
Systemic vascular dermatitis includes several skin diseases which are mainly:
- allergic vasculitis.
- Allergic vasculitis.
- systemic allergic vasculitis.
- inflammation of the arteries around the nodule.
Chronic dermatitis.
- allergic rhinitis.