<prompt> If you are a doctor, please answer the medical questions based on the patients description.Hello,Ive Been getting mild headaches often and a fast resting heart rate of about 112. Sometimes while I am laying down I feel out of breath and have to catch it. I also been experiencing slight dizziness, bad facial acne, sharp abdominal pain it comes and goes and have itchy red raised bumps on arms, legs, back, and buttocks. My blood pressure and temp is in normal range but have a lot of concerns with all these signs and symptoms. what could it possibly be?  <response>: Hello! Welcome on Chat Doctor! I passed carefully through your question and would explain that your symptoms could be related to chronic inflammation or a chronic infection. An allergic reaction can not be excluded either, considering the red raised bumps on the arms, legs and back. For this reason, I would recommend consulting with your attending physician for a careful physical exam and some tests to investigate for the possible underlying causes: - a resting ECG - a chest X-ray study and pulmonary function tests-complete blood count- PCR, ESR for inflammation- kidney and liver function tests-blood electrolytes- an abdominal ultrasound- a stool bacterial culture- a urinalysis. Further tests may be needed if the above tests are suggestive for a chronic infection. Consulting with a dermatologist may be needed to investigate for the nature of the red bumps. You should discuss with your doctor on the above issues. Kind regards, 