Can a Deviated Septum Cause Persistent Throat Infections?

In my experience I have seen plenty of patients who present with a chronically dry, irritated throat as a result of having a deviated septum. If you can't breathe thru your nose properly, you are going to breathe thru your mouth more often just by default. This can lead to more mouth breathing at night, which can itself lead to more of a drying effect. This can cause you to have irritation in your throat when you wake up. It shouldn't be causing an actual infection. Make sure you get evaluated properly by someone versed in both ENT and facial plastic surgery.

Yes it can. How? If the deviated septum causes mouth breathing cause the nose is too blocked, then people can develop a dry sore throat. This is particularly common during the night.

Hi Suzi baby,
The nasal septum is a midline structure in the nose composed of bone and cartilage. It can become crooked (hence term "deviated nasal septum" aka DNS) from trauma (many times not noted by the person) or a person can be born with this condition. The nose and paranasal structures are complex and on each side of the nose are the openings to the sinuses. If these sinus openings become blocked, increased mucus or pus can be formed and this may irritate the throat. However, an isolated septal deviaton is not commonly the cause of a persistent sore throat.
I recommend a visit to a specialist with knowledge about nasal disorders such as a Facial Plastic Surgeon or an Otolaryngologist-Head and Neck Surgeon for a complete evaluaton and management.