Final answer:
Pruritus refers to an itching sensation that leads to the desire to scratch. The duration of acute pruritus varies, often lasting from hours to a few weeks, and resolves upon removal of the irritant and administering appropriate treatment. Moisturizers and corticosteroid creams are typical treatments.
Step-by-step explanation:
Pruritus is the medical term for itching, which is a common skin condition characterized by an uncomfortable sensation that provokes the desire to scratch. It can be caused by a variety of factors, including allergic reactions, skin diseases, and external irritants. Because pruritus can be a symptom of both acute and chronic conditions, the duration of acute pruritus can vary greatly. In the context of acute diseases like allergic reactions from an irritant, pruritus may last hours to a few weeks. For example, cases like contact dermatitis may resolve once the irritant is removed and appropriate treatment is given.
In the scenario presented, a student named Penny experienced acute pruritus as a result of using a new sunscreen, leading to allergic eczema. This type of pruritus is usually short-lived and resolves upon cessation of exposure to the allergen. To manage the itching, the doctor recommended moisturizing cream and avoiding the triggering sunscreen. Similarly, a patient named Kerry developed a rash with pruritus lasting 7 to 10 days, which is consistent with an acute inflammatory response to an unknown allergen or irritant. Kerry's rash and itching resolved on their own, which further illustrates the acute nature of her pruritus.
Common management for pruritus includes the use of moisturizers, corticosteroid creams, and immunosuppressants, especially in cases related to allergic responses such as eczema. Individuals need to avoid known allergens and irritants to prevent the occurrence of pruritus. In addition, understanding the nature and duration of pruritus can help in evaluating whether the condition is acute or chronic and guide appropriate clinical management.