<unk>  is seen mainly in the Caribbean and Mexico, and rare in other parts of the world. Genetic and regional factors and factors specific to M. leprae have been shown to alter the manifestation of<unk> .
Lucio's phenomenon
Bell's phenomenon
Uhthoff's phenomenon
Waddell's signs
Brudziński's sign
Kohnstamm's phenomenon
Borsari's sign
Baastrup's sign