why do i have a headache

Headaches can have many causes, ranging from common and benign to more serious conditions. Common reasons for a headache include stress, tension in the neck or head muscles, dehydration, lack of sleep or poor sleep quality, skipping meals, certain foods or drinks (such as alcohol, especially red wine, and caffeine withdrawal), changes in weather, or eye strain. Migraines, which are a type of headache, may be triggered by sensory stimuli, hormonal changes, or genetic factors. Secondary causes of headaches can include infections (such as sinusitis or ear infections), medication side effects, or more serious conditions like high blood pressure or brain issues, though these are less common. If the headache is mild to moderate and related to known triggers like stress or dehydration, addressing those triggers can help. However, if the headache is severe, persistent, or accompanied by neurological symptoms (such as vision changes, weakness, confusion, or difficulty speaking), urgent medical evaluation is recommended. In summary, a headache may result from a variety of causes, primarily due to muscle tension, dehydration, stress, sleep issues, or dietary factors, but it is important to consider the context and other symptoms to determine if medical attention is needed.