Henoch-Schönlein purpura.

@article{Chowdhury1982HenochSchnleinP,
  title={Henoch-Sch{\"o}nlein purpura.},
  author={L N Chowdhury and M A Swerdlow},
  journal={Archives of pathology & laboratory medicine},
  year={1982},
  volume={106 12},
  pages={648}
}