Mild RSV symptoms can go away in a week or two, but they may go away sooner with professional treatment. In fact, treatment is recommended for a couple reasons. The first reason is that your symptoms may be caused by a more serious condition that requires treatment. For example, RSV can have similar symptoms as COVID-19 and other respiratory conditions that require treatment. The second reason treatment is recommended is that RSV can make you more susceptible to COVID-19 and other conditions, so by treating your case of RSV, you make yourself less susceptible to these other conditions. Since it can be hard to tell what condition you have, and RSV can make you susceptible to other conditions, you should consider getting professional treatment.