Sniffles, stuffy nose & drainage. Postnasal drip occurs when excess mucus accumulates in the back of the throat and nasal passages, leading to the sensation of mucus dripping down the throat. Common causes include allergies, infections, and irritants. It can result in throat discomfort, coughing, and a need to clear the throat frequently. Is it allergies, is it the change in temperature or is it viral? Book an appointment with our primary care provider today to stop the drip, please visit our we