Among those campaigning to keep kratom legal are scientists such as Andrew Kruegel, an associate research scientist at Columbia University.
Even these symptoms donât necessarily mean the cough is serious. Iâm seeing plenty of people this year with fevers and coughs lasting two and even three weeks or more who still turn out to have simple viral infections. But these are symptoms that are worth a call or even a trip to your doctorâs office.
Causes. A viral infection in the respiratory tract---such as the common cold or bronchitis---often causes a cough. Coughing can also be sparked by asthma, allergies, whooping cough and other conditions. Dry air can make a cough even worse, says SeattleChildrens.org.