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.
2 Could a pinched nerve in a neck cause numbness in the body and face? Possible: Forties male suspects neck nerve pinch as causal of face and body pain. If pain is localized to one shoulder and arm and same sided lateral cheek region this is a pattern sometimes associated with thoracic outlet syndrome.