Acute urticaria is a common allergic skin condition characterized by the sudden onset of itchy, raised wheals (hives) that typically resolve within six weeks. It may be triggered by allergens such as certain foods (e.g., nuts, shellfish), medications (e.g., antibiotics, NSAIDs), insect stings, or infections. Clinically, it is important to recognize acute urticaria promptly, as it can sometimes be the initial manifestation of a severe allergic reaction, including anaphylaxis. Management includes identifying and avoiding triggers, and treatment primarily involves antihistamines; corticosteroids may be used in more severe cases. Early intervention and patient education are crucial to prevent recurrence and manage potential complications.