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Clinical categories of itch
| Four main clinical categories of itch |
|---|
| 1. Neurogenic: Generated in the central nervous system in response to pruritogens but without any evidence of neural pathology. |
| 2. Psychogenic: Itching caused by a psychological disorder. |
| 3. Neuropathic: Results from neuronal pathology along the afferent pathway. |
| 4. Pruritoceptive: Generated in the skin, usually by inflammation or other visible pathological processes involving the skin. |
