<unk>  means inflammation of a blood vessel.<unk>  is classified based on the size of vessels which are involved. Large sized-vessel<unk>  mostly happens in major vessels of the body, such as Takayasu's Arteritis and temporal Arteritis. Medium sized-vessel<unk>  includes Kawasaki's Disease and Polyarteritis Nodosa. Small sized-vessel<unk>  commonly manifests as skin lesions and includes Churg-Strauss Syndrome, leukocytoclastic<unk> , Henoch-Schonlein Purpura, and Wegener's Granulomatosis. Variable sized-vessel<unk>  are Sjogren syndrome and Cogan syndrome. Single organ<unk>  is basically primary central nervous system angiitis. As the affected vessels are vary in size, the affected organs could be different among patients which leads to different disease presentation and severities. This spectrum of diseases could be primary or secondary to another conditions like sepsis. A high degree of level of suspicious is necessary when encounter a patients with appropriate clinical manifestation to lead to final diagnosis. Diagnosis is based on a combination of clinical scenario, lab findings, and imaging findings. Although the definite diagnostic modality is tissue biopsy and microscopic findings. The diseases course could be acute although they usually presents with constitutional symptoms and chronic progression. Treatment of<unk>  depends on the disease severity consists of applying immunosuppressant agents to induce the remission and maintain the the disease course under control.
Vasculitis
Arterial thrombosis
Neuritis
Atherosclerosis
Lymphangitis
Embolism
Uveitis
Arteriosclerosis