This is for myself and others staying in Peru:

1- pinworms [climb up into the anus and itch]

2- amoebas [or similar bugs] damage intestines, then organs and brain
[ayahuasca was suggested for the ameobas in Peru, a purgetory inducing vomitting]

3 urinary infections and prostate disease [often caused by std's but here a myriad of micro/myco-bugs [possibly sewage] in the brownish amazon tap water ascending up the urethra and into bladder, prostate, etc [most prostate disease dr.s now attribute to e. coli = poor hygene by females or anal sex], getting ear infections is another sign that the water [amazon] is the likely cause [besides not having sex].

these 3 issues need to be adressed asap or pharmaceutical anitbiotics and anti microbials must be considered which are highly toxic
so any know natural remidies will help many people.