For viruses, classification is normally based on type of nucleic acid, morphology, presence or absence of an envelope and replication properties. A number of families is recognized, with the family name ending in -viridae, e.g. Poxviridae (double-stranded DNA, enveloped animal viruses).
Heartburn, regurgitation, and dyspepsia are a few of the most common acid reflux symptoms. Heartburn. Also called acid indigestion, heartburn is a burning pain or discomfort that can move up from your stomach to the middle of your abdomen and chest. The pain can also move into your throat.
If you know the symptoms of heartburn, if you know what heartburn feels like, it can lead to earlier treatment. Heartburn (reflux) is a symptom of another digestive disorder, and not a disorder by itself. For example, heartburn is the most common symptom of gastroesophageal reflux disease (GERD). Acid reflux is a medical condition, with heartburn as a possible symptom of that condition. Many people have different heartburn triggers, but most people have similar heartburn symptoms. A burning sensation in the chest.