Notalgia paraesthetica
| Classification according to ICD-11 | |
|---|---|
| EC90.3 | Pruritus due to neurological disorder |
| ICD-11 ( WHO version 2019) | |
In dermatology, notalgia paraesthetica is a form of chronic itching on the back. The discomfort that usually occurs next to the spine is explained as neuropathic pruritus , i.e. a disorder caused by damage to the afferents in the peripheral nerves or the spinal cord that conduct the itching . As a result of constant scratching or rubbing, changes ( lichenification ) and discoloration (hyperpigmentation) of the skin can occur. Another explanation is the irritation of the rami dorsales of the Nn. intercostal Th2 to Th6, which supply the paraspinal muscles and the overlying skin. This leads to a spasm of the muscles and also to itching in this area.
Therapeutic be local anesthetics such as benzocaine , camphor or lidocaine used. Individual reports also describe the very good effectiveness of topically applied capsaicin , a vanilloid alkaloid, which can cause desensitization of the sensory nerve fibers and interruption of the transmission of itching and burning pain. In the event of nerve irritation, chiropractic treatment of the corresponding T2 to T6 segments is recommended.
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- ↑ a b Samuel Zagarella: Nerve entrapment syndromes in dermatology: Review and practical approach to treatment . In: Australasian Journal of Dermatology . April 20, 2018, ISSN 0004-8380 , doi : 10.1111 / ajd.12822 ( wiley.com [accessed July 12, 2018]).
- ↑ German Dermatological Society (in charge): Working Group of the Scientific Medical Societies - Guideline Diagnostic and therapeutic procedure for chronic pruritus . pdf (2016, updated), accessed November 17, 2017.
