Anaesthesia dolorosa
| Classification according to ICD-10 | |
|---|---|
| R20.- | Sensory disorders of the skin |
| ICD-10 online (WHO version 2019) | |
As anesthesia dolorosa are referred to in a body often excruciating pain duration or spontaneous seizure pain which would otherwise due to the failure of the surface sensitivity is determined.
This pain pattern can occur in the sense of deafferentiation pain, especially after recent injuries to the nervous system such as a posterior cord transection or a tear off of a posterior root, and as a complication of the treatment of trigeminal neuralgia by means of percutaneous radiofrequency thermocoagulation of the ganglion gasseri . Nowadays, this so-called thermorhizotomy is mainly used as an alternative to neurovascular decompression in those patients who are at too high a risk for surgery .
Thermocoagulation is a treatment of pain through heating under the control of imaging procedures. Individual nerve fibers are obliterated with a heat probe under local anesthesia. It is used, for example, on joint facets of the lumbar spine and cervical spine.
Also, the post-herpetic neuralgia , especially in people over 60 is connected by this burning sensations, often with a allodynia in (tenderness).
The pain quality is usually described as burning, as if one had been poured with boiling water. Pathophysiologically , a central sensitization in the spinal cord is to be assumed as a so-called wind-up phenomenon , in which so-called multireceptive WDR neurons (wide dynamic range neurons) play an important role and lead to functional and structural changes in the entire nociceptive system.
See also: phantom pain
