Tenosynovitis caused by Pyracantha coccinea (fire thorn) has not been reported before, most likely because it is uncommon and the diagnosis is difficult to confirm. The symptoms, differential diagnosis, and the surgical treatment are described. Three cases are reported. It is postulated that natural fungicides in the sapwood may be implicated in the inflammatory reaction.
Theuvenet, W. J., Essed, C. E., Eggelmeijer, F., & Alink, G. M. (2000). Tenosynovitis caused by Pyracantha coccinea injury of the hand. European Journal of Plastic Surgerey, 23, 214-216. https://doi.org/10.1007/s002380050254