Your lower esophageal sphincter (LES) is a muscular ring that connects your esophagus with your stomach. It relaxes to let food pass through but otherwise stays closed to prevent stomach acid from ...

Heart attack symptoms, however, present differently. Patients experiencing a heart attack often describe tightness in the ...

NEW YORK (Reuters Health) - Stomach acid reflux or heartburn may be a particular problem for people with breathing problems such as emphysema or bronchitis, known generally as chronic obstructive ...

If you have a tight throat and other symptoms of an allergic reaction, such as difficulty breathing or swelling of the lips, throat, or tongue, seek emergency medical care immediately. Though rare, a ...