Many millions of people all throughout Florida and North America suffer from some form of food intolerance. Lactose intolerance, which causes difficulty digesting dairy foods, is among the most common. Allergies to nuts, shellfish and other foods are also well known.
Other allergies, like hay fever, are seasonal, and exposure to related allergens in South Florida is more difficult to avoid.
What ties many forms of allergy together is the fact that they cause inflammation and other issues in the sinuses. These sinus problems can lead directly to headaches. Bacterial infections in the sinus tracts also make headaches more likely.
The same issue exists in reverse. That is, migraines that manifest as pain in the front of the head may go undiagnosed if the symptoms are blamed on environmental irritants such as allergens. This means you are less likely to get treatment that will alleviate your discomfort.