Definition of scholar. 1 : a person who attends a school or studies under a teacher : pupil. 2a : a person who has done advanced study in a special fieldb : a learned person.
Allergy migraines can be triggered by an allergic reaction to food. With a food allergy, the immune system mistakes a food as harmful and releases substances that can trigger head pain and congestion. Migraines can also be caused by seasonal allergies or hay fever. Seasonal allergies can cause the sinuses to swell, which can trigger migraines. Allergy migraines can also be caused by common indoor allergens like urine, dried skin, pet dander, cockroach particles, mold and dust mite droppings.
Antihistamines block histamine, a symptom-causing chemical released by your immune system during an allergic reaction. Oral antihistamines, available as over-the-counter and prescription drugs, ease runny nose, itchy or watery eyes, hives, swelling, and other signs or symptoms of allergies. Because some of these drugs can cause drowsiness and fatigue, they shouldn't be taken when driving or doing other potentially dangerous activities.