Final answer:
The medical assistant should document the patient's reaction as urticaria, which matches the symptoms of an itchy rash with raised lesions typically following an allergy to a substance.
Step-by-step explanation:
The medical assistant should document the patient's skin reaction as urticaria, which is characterized by an itchy rash with pinkish, raised lesions. Unlike eczema, psoriasis, or impetigo, urticaria is typically a result of an allergic reaction and can occur within minutes to hours after exposure to an allergen, such as an antibiotic injection. Eczema presents as dry, itchy patches and is typically a chronic condition. Psoriasis involves thick, scaly buildups on the skin, while impetigo is a bacterial skin infection characterized by sores. Therefore, for the provided patient symptoms, urticaria is the appropriate term to document.
The term that the medical assistant should use when documenting the patient's finding in the medical record is Urticaria. Urticaria, also known as hives, is characterized by itchy rash with pinkish, raised lesions. It is commonly caused by an allergic reaction, such as a reaction to an antibiotic injection.