 This is WTOP News. Facts Matter. 823. The extreme heat we've been suffering through lately can trigger headaches and migraines. WTOP's Lynn Bowie spoke to a doctor about how to avoid getting those. It happens all the time. Heat can definitely cause people to have more headaches. Dr. Rachel Marquez is a physician with Kaiser Permanente. To avoid a heat-induced headache or migraine, she says stay hydrated.