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.
People with acid reflux disease often have some or all of the following symptoms: 1  Pain when or difficulty swallowing. 2  Bad breath and/or bad taste in the mouth. 3  Burping. 4  Chest pain. 5  Heartburn. 6  Hoarseness. 7  Regurgitation. 8  Sore throat.