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

Who May Qualify: Patients suffering from migraine with aura, migraine without aura, episodic, and chronic migraine according to ICHD-3 diagnosis will be legible for the study. Who Should NOT Join This Trial: 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 Always talk to your doctor about whether this trial is right for you.