 [ Symptoms ] is it normal to have a cough for 3 weeks after you have had a cold  i had a cold 3 weeks ago and all the other symptoms have gone away except the cough it has not stopped at all it is even gotten worse every time i cough i cough up white sometimes green or yellow is it normal [ Disease ] hi this is burning mouth syndrome causes can be hypothyroidism or vitamins deficiency my opinion the cause is dry mouth due to salivary glands problem did you have cancer treatment at any point