illnesses that weaken people to the point that they are thin and shaky (see Molina)
Orthographic Variants:
uihuixcatotonti
Alonso de Molina:
uiuixcatotonti. enfermos debilitados assi. Alonso de Molina, Vocabulario en lengua castellana y mexicana y mexicana y castellana, 1571, part 2, Nahuatl to Spanish, f. 158v. col. 2. Thanks to Joe Campbell for providing the transcription.