If you find your cat gagging in an isolated corner of your home, chances are she's in the process of coughing up a furball. If it sounds like your cat can't breathe, she may have asthma. Certain cat symptoms are no cause for alarm, while others will require a visit to the vet. A moist nose, for example, is rarely a cause for concern, while distemper, one of the world's worst cat diseases, demands immediate medical attention. Common distemper symptoms include: 'gunky' eyes, chest congestion, coughing, diarrhea, heavy nasal discharge, and weight loss. These types of cat symptoms almost always point to a specific condition while other cat symptoms are so common, they will require further investigation. Common cat symptoms include cough, diarrhea, fever, vomiting, hair loss, constipation, depression, and lethargy. Continue reading to get the facts about dozens of symptoms, possible corresponding conditions, and treatment options.