A nurse is reinforcing teaching with a client who has a new prescription for epinephrine auto-injector PRN. The nurse should reinforce with the client that the medication can help treat which of the following manifestations?

A. Hyperglycemia: Epinephrine is not used to treat elevated blood glucose levels. Its primary action is to counteract severe allergic reactions, not metabolic disturbances such as hyperglycemia. B. Hand tremors: Hand tremors can be a side effect of epinephrine rather than an indication for its use. Tremors are related to its sympathomimetic effects on the nervous system and are not treated by the medication. C. Nausea: Nausea can occur as part of anaphylaxis. Epinephrine rapidly reverses severe allergic reactions by reducing airway constriction, vasodilation, and hypotension, which can alleviate associated symptoms like nausea. D. Swing of the lips: Abnormal lip movements are not treated with epinephrine and are unrelated to allergic reactions. Epinephrine is specifically indicated for signs of anaphylaxis, including airway, cardiovascular, and systemic manifestations.