MEDI7212 Lecture Notes - Lecture 10: Optic Neuritis, Antigen, Hypertensive Retinopathy
Document Summary
Sah: temporal arteritis, parenchymal hemorrhage, malignant htn, cavernous sinus thrombosis. Causes: most likely intracranial disorder, vascular - intracranial haemorrhage, thrombosis, cavernous sinus thrombosis, vasculitis, malignant htn, arterial dissection, aneurysm. Lumbar puncture to exclude infectious causes, esp with fever or meningeal signs. Sinus ct = bacterial sinusitis, independent or cause of venous sinus thrombosis) Subarachnoid hemorrhage, intracranial mass or meningitis = hospital treatment. Frequent migraines not responsive to standard therapy: migraines with atypical features, chronic daily headaches due to medication overuse. Frequency - 15+ days per month over 6 months: duration - 4+hrs per headache day. Intracranial lesions: head injury (post-traumatic, cervical spondylosis, dental or ocular disease, tmj dysfunction, htn, medication-induced, depression. Precipitating factors: recent sinusitis, dental surgery, head injury or symptoms suggesting a systemic viral infection may suggest the underlying cause, migraine = emotional stress, fatigue, nitrite or tyramine containing foods, menstrual.
