Indusium: the case made by an insect larva: a membranous layer of the embryo of Locustidae below the serosa. Explanation of Terms Used in Entomology John. B. Smith. serosa: the outer membrane that envelops the forming embryo, the amnion and the remainder of the egg. Explanation of Terms Used in Entomology John.
In essence, your body forms an allergic reaction to stress. Unfortunately, stress can not be eliminated with histamine, so instead, the histamine just causes hives to appear on your face, neck, chest and other parts of your body.
Headaches are most often the. result of muscle spasms in the neck, upper back and shoulder muscles. When a. muscle on one side of the neck goes into spasm it causes not only a one-sided. headache but also pushes on the vagus nerve in the neck -- the nerve that. makes the stomach turn on -- and causes nausea.