Ecuador, especially in Quilti if I'm not mistaken, there's a practical magic, or a sacred thing of performing such a therapy. Basically a therapist is different than others in the rest. These therapists try to combine their performance with magical thing by using some stinging herbs or nettles. 

It looks a simply treatment such as rubbing and scrubbing that nettles over the patient's naked body. Even a lot of confession from patients who've ever done this before, that when a therapist rubbed the stinging nettles over their body, they feel their body buzzed up in a prickly strong sensation. Welts often popped up in angry red streak. 

They believe this ritual could solve a lot of problem. People believe it can be used to unblock someone's aura.