How Is Persistent Itching Diagnosed?
Published: Jul 07, 2024
Persistent itching can be a puzzle to solve. Learn how doctors diagnose the underlying causes of pruritus.
Contents
Initial Evaluation Steps
When evaluating pruritus, doctors first determine if there are primary skin lesions present. This helps differentiate between dermatologic and systemic causes of itching.
Laboratory and Imaging Tests
In cases of generalized pruritus without skin lesions, blood tests and imaging studies may be needed to uncover systemic diseases. These tests help rule out conditions like liver disease or thyroid disorders.

Skin Biopsy and Other Tests
For certain skin conditions, a skin biopsy might be necessary to identify the specific disorder. Additionally, tests for skin infections or allergies may be conducted based on the patient's history.
Frequently Asked Questions
Doctors first check for primary skin lesions to determine the cause of itch.
Yes, blood tests can help identify systemic causes of itching.
A skin biopsy is needed when skin conditions are suspected but not clearly identified.
Key Takeaways
Accurate diagnosis is crucial for addressing persistent itching effectively.
Explore diagnostic options with Doctronic to find out what's causing your persistent itch.Related Articles
References
Greco PJ, Ende J. Pruritus: a practical approach. J Gen Intern Med 1992; 7:340.
Yosipovitch G. Epidemiology of itching in skin and systemic disease. In: Itch: Basic Mechanisms and Therapy, Yosipovitch G, Greaves MW, Fleischer Jr AB, McGlone F (Eds), Marcel Dekker, New York 2004. p.183.
Always discuss health information with your healthcare provider.