Hi Doctor I am a male, 30 yrs old. My problem is strange bleach-type stains on all my T-shirts at the same spots: around the waist-line. It is not because of any wash or detegent and that is for sure, because it happens with my new T-shirts too. Had it been because of deodorant, it would have been in underarms too, which is not the case. Could it be any kind of acid secretion or something like? Please assist. Thanks and regards, Paul