Symptoms. A simple absence seizure causes a vacant stare, which may be mistaken for a brief lapse in attention. The seizure lasts about 10 seconds, though it may last as long as 30 second, Causes. Seizures are caused by changes in the way nerve cells in the brain communicate. Nerve cells in the brain create, send and receive electrical impulses., While many people with Barrett's esophagus have long-standing GERD, many have no reflux symptoms, a condition often called "silent reflux." Whether this acid reflux is accompanied by GERD symptoms or not, stomach acid and chemicals wash back into the esophagus, damaging esophagus tissue and triggering changes to the lining of the swallowing , Gastroesophageal reflux disease happens when stomach acid flows back up into the esophagus and causes heartburn. It's often called GERD for short. This backwash is known as acid reflux, and it can irritate the lining of the esophagus. Many people experience acid reflux now and then. However, when , Some people who have myocardial ischemia don't have any signs or symptoms (silent ischemia). When they do occur, the most common is chest pressure or pain, typically on the left side of the body (angina pectoris). Other signs and symptoms — which might be experienced more commonly by women, older people and people with diabetes — include:, Asthma is a condition in which your airways narrow and swell and may produce extra mucus. This can make breathing difficult and trigger coughing, a whistling sound (wheezing) when you breathe out and shortness of breath..