31 Strange Causes of Headaches That Have Nothing to Do With Dehydration

9. Allergies: The Immune System Response

Woman allergic suffering from seasonal allergy at spring, sneezing, blowing nose with handkerchief. Photo Credit: Envato @anatoliy_gleb

Allergic reactions can also lead to headaches, particularly in individuals with sinus allergies. The body's immune response to allergens can cause inflammation and pressure in the sinuses, resulting in sinus headaches. Understanding the connection between allergies and headaches involves recognizing how the immune system's response to allergens can affect the body's pain pathways. This section will explore common allergens that can trigger headaches and provide strategies for managing allergies to reduce headache occurrence. By identifying and avoiding allergens, individuals can minimize the impact of allergies on their headaches.

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