Widespread musculoskeletal pain is the most common symptom of fibromyalgia. It generally occurs at multiple sites throughout the body, although it may start in one region, such as the neck and shoulders, and later occur at other locations over a period of time.
But it can develop later in life. A milk allergy is an immune system reaction that causes various symptoms to form within the first hour of consuming the dairy product. Headaches and fatigue related to a milk allergy are the result of sinus inflammation.airy products on tabletop. Photo Credit Digital Vision./Photodisc/Getty Images. Consuming dairy products doesn't cause headaches and fatigue in healthy adults. If you eat dairy products and get a headache and fatigue, you may be allergic to milk or may be lactose intolerant.
If you're really uncomfortable, it's okay to express a small amount of milk to ease the engorgement. But keep in mind that expressing regularly tells your body to make more milk and delays how long it takes for milk production to stop.