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.
The most serious reaction to milk allergy is called anaphylaxis. This is a potentially life threatening reaction that can occur rapidly. Allergy to foods (including casein in milk) is believed to be the leading cause of anaphylaxis outside the hospital setting.. If a glass of milk or a slice of pizza causes swollen lips, hives, or other significant symptoms, you may have an allergy to casein, a protein in milk. Another milk protein associated with food allergies is whey. Some people are allergic to both casein and whey.