This winter my immune system went into overdrive (COVID plus a flu shot), and I got a monster canker sore on my uvula. Here is why that location hurts so much, what makes it hard to treat, and what to watch for.

When OTC gels and patches are not enough: chemical cautery, silver nitrate, dental lasers, prescription anti-inflammatories, and what is actually accessible in the US vs EU.

A practical guide to common OTC canker sore options like numbing gels, protective liquids, patches, rinses, and oral pain relievers, plus what they do and when to seek help.