Arteritis and phlebitis are forms of vasculitis. Pulsatile tinnitus may also indicate vasculitis, or more specifically, giant cell arteritis. Such diagnoses include malignant (or necrotizing) otitis externa, mastoiditis, temporal arteritis, and cancer. Other unusual presentations described include cystoid macular edema, temporal arteritis, and cluster headaches. Symptoms of temporal arteritis are classified as specific and nonspecific. It most often presents with ischemic symptoms, and frequently mistaken for Takayasu arteritis. Polymyalgia rheumatica is sometimes associated with temporal arteritis, a condition requiring more aggressive therapy. Zinc ionophores show antiviral activity against Equine viral arteritis. Specific symptoms usually develop in the advanced stages of temporal arteritis. Giant-cell arteritis may present with atypical or overlapping features. Polymyalgia rheumatica is often seen in association with temporal arteritis. In May 2017, tocilizumab was FDA approved for giant cell (temporal) arteritis. Diagnosis of arteritis is based on unusual medical symptoms. His condition has been diagnosed by modern doctors as possibly polymyalgia rheumatica and temporal arteritis. The name (giant-cell arteritis) reflects the type of inflammatory cell involved.