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.
A more severe form is systemic nickel allergy syndrome (SNAS), which is clinically characterized by cutaneous manifestations (such as contact dermatitis, pompholyx, hand dermatitis, dyshydrosis, and urticaria), a long-term course, and systemic symptoms (such as headache, asthenia, itching, and gastrointestinal disorders related to histopathologic alterations of gastrointestinal mucosa, borderline with celiac disease).