What happens if someone gets a yeast infection during Pesach? Does s/he need to worry that it may somehow enter the digestive tract and make the food there chametz? If it's in the bladder and mixes with urine or in the anus and mixes with feces, both of which contain digested food, is that a concern? May one handle the infected area or is that considered chametz, too.
If one finds the yeast during Yom Tov, itself, is it considered muktzah, and would one have to cover himself with a blanket or a huge pot until Hol Hamo'ed?