India, April 21 -- As the summer heat starts to get worse, many people experience more intense and frequent headaches. Headaches and heat have a direct link, and summer season can worsen health conditions. In an interview with HT Lifestyle, Dr Atul Prasad, vice chairman and HOD, neurology, BLK-Max Super Speciality Hospital explained how summer heat can trigger headaches. Also read | How to get rid of migraine headaches fast? Doctors share comprehensive guide to migraine aura, triggers, best treatments

High temperatures increase sweat loss, leading to dehydration, which is a major headache trigger. Dehydration reduces blood volume, potentially lowering blood flow and oxygen to the brain.

Heat causes blood vessels to expand (vasodilation)...