History of mental health during New Spain colony, the case of traditional medicine (prehispanic cultures and decolonial studies)

One of the frequent analysis practiced in the field of critical studies of mental health follows Michel Foucault's concept of modernity as the beginning of madness. In his view, the way society seeks to structure its institutions and its way of life has a counterpart, the classification of those who can't function within the productive and well behaved discipline society.

Those which are mad, degenerated, unproductive, are considered the abbormals that cannot exist next to the regular citizen, because they would be a mere obstacle to efficiency. Nevertheless, during Mexico's conquest Spaniard authority allowed indigenous healers to practice traditional medicine because the Spanish empire didn't have enough doctors to assist the entire population (search for Noemi Quezada's research about this topic).

Since then traditional healers have practiced and shared their view on the subject in some regions inside Mexico. This fact alone makes hard to apply directly and without exam theories like Foucault's mentioned above.

I'm curious to explore more about the implications of prehispanic ontology for Mexico's mental health institutions through History. I'm into Castro-Gomez and Dussel reflections upon this. But I'm also very curious to know how contemporary healers see and understand mental health.