What could cause chronic pain upon inhale in the area of the ULQ of the abdomen in an 18 year old? Pain is sharp upon inhale and continues throughout exhale. On set is random, not consistent with Angina Pectoris symptoms however, on occasion, pain will set in after light exertion (walking most of the day for example). Has been going on for a few years now. Pain scale: At best 5/10 noticeable pain but not sharp. At worst (most often in this state) 8/10 or 9/10. Trouble breathing, difficult to speak when in pain. No bruising on skin or around pain area. Pain felt under ribs. This time around, pain has been significantly worse and concerning.