<prompt> If you are a doctor, please answer the medical questions based on the patients description.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 510 noticeable pain but not sharp. At worst most often in this state 810 or 910. 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.  <response>: Hi. Thanks for an elucidated and correct history. Your history of pain in left upper qua Chat Doctor. In this condition both the layers of the pleura which cover the lung and rub against each other and cause pain if they are diseased in past due to some infection or so. The best way is to get an X-ray Chest, preferably CT scan of the lungs. This will help to get a diagnosis of an underlying cause also like tuberculosis. The treatment then can be very specific. 