Management of<unk>  varies with the underlying cause of the<unk>  and the stage of care. Prehospital care<unk>  is a common symptom encountered by emergency medical services. Aspirin increases survival in people with acute coronary syndrome and it is reasonable for EMS dispatchers to recommend it in people with no recent serious bleeding. Supplemental oxygen was used in the past for most people with<unk>  but is not needed unless the oxygen saturations are less than 94% or there are signs of respiratory distress. Entonox is frequently used by EMS personnel in the prehospital environment. However, there is little evidence about its effectiveness. Hospital care Hospital care of<unk>  begins with initial survey of a person's vital signs, airway and breathing, and level of consciousness. This may also include attachment of ECG leads, cardiac monitors, intravenous lines and other medical devices depending on initial evaluation. After evaluation of a person's history, risk factors, physical examination, laboratory testing and imaging, management begins depending on suspected diagnoses. Depending upon the diagnosis, a person may be placed in the intensive care unit, admitted to the hospital, or be treated outpatient. For persons with suspected cardiac<unk>  or acute coronary syndrome, or other emergent diagnoses such as pneumothorax, pulmonary embolism, or aortic dissection, admission to the hospital is most often recommended for further treatment. Outpatient care For people with non-cardiac<unk> , cognitive behavioral therapy might be helpful on an outpatient basis. A 2015 Cochrane review found that cognitive behavioral therapy might reduce the frequency of<unk>  episodes the first three months after treatment. For persons with<unk>  due to gastroesophageal reflux disease, a proton-pump inhibitor has been shown to be the most effective treatment. However, treatment with proton pump inhibitors has been shown to be no better than placebo in persons with noncardiac<unk>  not caused by gastroesophageal reflux disease. For musculoskeletal causes of<unk> , manipulation therapy or chiropractic therapy, acupuncture, or a recommendation for increased exercise are often used as treatment. Studies have shown conflicting results on the efficacy of these treatments. A combination therapy of nonsteroidal anti-inflammatory drugs and manipulation therapy with at-home exercises has been shown to be most effective in treatment of musculoskeletal<unk> .
Chest pain
Angina 
Angina
Abdominal pain
Palpitations
Neck pain
Pain
Orthopnea