Assessment of Oral Caffeine Intake in Changing the Severity of Acute Migraine Attack Using VAS Score Among Patients Attending Headache and Neurology Outpatients Clinic of Ainshams University Hospitals

Inclusion Criteria: Patients suffering from migraine with aura, migraine without aura, episodic, and chronic migraine according to ICHD-3 diagnosis will be legible for the study. Exclusion Criteria: Patients who have history of any cardiac dysrhythmia, hypertension, ischemic heart disease, active peptic ulcer disease, inflammatory bowel disease, obsessive compulsive disorder, pregnancy, breast-feeding, renal failure, hepatic failure, sleep disorder, mental retardation, and history of substance abuse that prevent them from cooperating with us during the study Patients who had headache due to: Cluster headache, trigeminal neuralgia, glossopharyngeal neuralgia, headache secondary to trauma, cranial disorder, vascular disorder, infection, or mass lesion, will also be excluded