This podcast comprehensively details various headache types, including over 150 classifications such as primary and secondary headaches. It specifically covers common types like migraine, tension-type, cluster, hypnic, exertional, sinus, menstrual, hangover, caffeine-related, head-injury, and medication-overuse headaches. The overview explores numerous causes, ranging from stress, anxiety, sleep disruption, dehydration, poor posture, and hormonal changes to eye strain, specific foods/medications, loud noises, and physical strain. It describes key symptoms such as throbbing pain, sensitivity to light and sound, nausea, vomiting, and migraine aura. Furthermore, it discusses a wide array of treatment options including over-the-counter (OTC) pain relief (ibuprofen, acetaminophen, aspirin), prescription medications (triptans, beta-blockers, indomethacin, topiramate, propranolol, amitriptyline), and preventive measures like lifestyle changes, stress management, acupuncture, and neurostimulation. The overview also addresses chronic daily headaches, detailing subtypes like chronic migraine, chronic tension-type headache, new daily persistent headache, and hemicrania continua, along with when to seek medical attention.