Allodynia. Pain due to a stimulus that does not normally provoke pain. Examples include touch, light, pressure, or moderate cold or warmth. Associated with neuropathy, inflammation, and certain headaches. It is a lowered threshold where the stimulus and response mode differ from the normal state.
Allodynia mapping are visual representations of complex geographic data that provide a quick overview of this sensation. It is mainly used for explanatory purposes. Neuropathic pain almost always produces increased sensitivity to light touch. When this touch causes pain, this is called mechano-sensitive allodynia, and it can and should be mapped. In allodynia, cold and anesthetic testing is used. However, these tests are only done in cases where dentists have a proven focal mechano-sensitive allodynia map.
Mechano-sensitive allodynia mapping is typically done with a Q-tip, and one side is compared to the other to find the area of unusual sensitivity. This allodynia can be intra-oral or extra-oral.
Gingival Cold Test Protocol
https://ostrowon.usc.edu/2019/07/09/allodynia-mapping-and-testing/