Why recurring canker sores are often framed as an immune “misfire,” what researchers think is happening (T cells, cytokines), and practical steps that may reduce outbreaks.

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.

A visual and practical guide to common mouth ulcers (canker sores, trauma, herpes, thrush, lichen planus, systemic disease, and oral cancer), how they look and feel, and when to seek medical care.

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.