I'm just going by every other sickness out there. Whatever physical illness one gets, it gets worse until it starts getting better or until it's treated. Even the common cold. The only things that would last for days or weeks, go away, come back for days or weeks, go away... are things caused from anxiety, and if you are exposed to allergens. (OK, even a stomach issue - suppose all of a sudden you (you in general) became lactose intolerant, THEN it could do what it's doing - you'd be eating dairy not realizing you are lactose intolerant, not eat it for a few days you'd be fine, then eat it again...) or any other kind of food sensitivity. But not an ILLNESS.