I have a small lump on the upper left side of my abdomen. When I lay down I cant feel it. I can only feel it standing up. It doesnt hurt but sometimes I feel a pinch or pull from it and when i rub it my skin turns red. I have also lost 10-15lbs unintentionally in the last 6-8 weeks.
Welcome to Chat Doctor .1. Your history suggest the possibility of the hernia / anterior abdominal wall defect.2. When standing there is a pressure effect - so contents bowel and momentum coming through the defect and goes back when pressure releases.3. Suggest an ultrasound scan sitting, lying standing and with cough - to measure the defect.4. Other possible causes is just your feeling. In any case get an appointment with your GP and get examined, get needful treatment and scans.5. Do not ignore - if its hernia complication / emergencies are expected. Hope it helps you. Wish you a good health. Anything to ask ? Do not hesitate. Thank you.