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Cracking the Itch Code: How Doctors Diagnose Chronic Pruritus
Published: Dec 27, 2023
When chronic itching persists, finding the root cause is crucial for effective treatment. Discover the steps doctors take to diagnose the underlying reasons for your persistent itch.
The Power of Patient History
Your doctor's first step will be a detailed discussion about your symptoms. They'll ask about the duration, location, and nature of your itch, as well as any factors that make it better or worse. This information can provide valuable clues about potential causes.
Physical Examination
A thorough skin examination is crucial. Your doctor will look for primary skin lesions, signs of scratching, and other physical clues. They may use tools like a dermatoscope for a closer look. For some conditions, they might perform specific tests like the ice cube test for aquagenic pruritus.
Laboratory Tests
Blood tests can help identify systemic causes of itching. Common tests include a complete blood count, liver function tests, and thyroid hormone levels. In some cases, your doctor might order more specialized tests based on their suspicions.
Advanced Diagnostics
If initial tests are inconclusive, your doctor might recommend additional procedures. These could include skin biopsies to check for skin diseases, or imaging studies to look for underlying conditions like cancer. In some cases, neurological tests might be needed to diagnose neuropathic itch.
Frequently Asked Questions
No, biopsies are only necessary in certain cases.
It varies, but can take several visits and multiple tests.
Sometimes the cause remains unknown despite thorough investigation.
Piecing Together the Puzzle
Diagnosing chronic itch can be complex, but each test brings you closer to understanding and managing your condition.
References
- Yosipovitch G, Bernhard JD. Clinical practice. Chronic pruritus. N Engl J Med 2013; 368:1625.
- Ständer S, Weisshaar E, Mettang T, et al. Clinical classification of itch: a position paper of the International Forum for the Study of Itch. Acta Derm Venereol 2007; 87:291.
This article has been reviewed for accuracy by one of the licensed medical doctors working for Doctronic. Always discuss health information with your healthcare provider.
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