What is the difference between a persistent cough you always had and a cough of covid 19? how can you tell the difference between normal throat irritation and covid 19 with cough?

Fever: Persons showing any symptoms of covid usually have more than one. Look for fever, shortness of breath, chills, fatigue, muscle aches, loss of smell. If additional symptoms are present, isolate yourself and call your Dr. Get help if you experience Trouble breathing, Persistent pain or pressure in the chest, New confusion, Inability to wake or stay awake, Bluish lips or face.

Cough: Covid cough is usually a dry cough. Mucus may or may not be produced. Because COVID 19 can be asymptomatic, the only real way to differentiate the two is with testing. Do you have other symptoms? Possible sx's of COVID 19" shortness of breath, nasal congestion, fever, headache, sore throat, feeling tired, loss of sense of taste/smell, decreased appetite, nausea, diarrhea, vomitingor chills.