I've noticed that I'm always dealing with one blocked nostril, and it's really odd because it only feels unblock while I'm taking a hot shower. It's not a runny nose or anything that feels like a cold. Could this be something I should be concerned about? Is there a reason why the steam or heat from the shower might be helping?

The persistent blockage of one nostril, except during hot showers, could be due to a deviated septum, nasal polyps, enlarged turbinate bones, or environmental allergies; consider consulting an ear, nose, and throat (ENT)