1 Two-part, three-part and four-part fractures can occur. 2  The fractures are then classified by their degree of displacement and angulation. 3  Surgical neck fractures are the most common type of proximal humeral fracture.
About 1.8 million people in the United States experience allergies to tree nuts, the Food Allergy and Anaphylaxis Network reports. Like other tree nuts, walnuts can cause a range of unpleasant reactions.
Severity of walnut-induced allergic reactions ranges from slight oral allergy syndrome (itching in the mouth and/or tongue soon after chewing and ingesting a walnut) to severe and even potentially fatal systemic reactions (anaphylactic shock; hives and swelling of the throat, asthma).