Question

Noise causes a headache by

• A. Dilating blood vessels of brain
• B. Dilating pupil of eye
• C. Increasing cholesterol level in the blood
• D. None of the above

Answer 1

The correct option is A Dilating blood vessels of brain

• Headaches can have causes that aren't due to underlying disease. Examples include lack of sleep, an incorrect eyeglass prescription, stress, loud noise exposure or tight headwear.
• Noise triggers the release of proteins lice CGRP in the brain which leads to pain and inflammation. Noise causes a headache by dilating blood vessels(vasodilation) of the brain.
  
• So, the correct answer is 'Dilating blood vessels of the brain'.