post nasal drip
- mucusProtective bodily secretion
- dripLiquid falling slowly
- throatNeck's inner passage
- sinusAir-filled cranial cavity
- congestionExcessive accumulation causing blockage
phlegm · cough · swallow · tickle · irritation · allergy · cold · sniffles · clearing · hack · gag · nausea · antihistamine · decongestant · nasal · stuffy · runny · drainage