Is the chance of having aphthous in your mouth higher during fall and winter?

Aphthous ulcer: Apthos ulcers are not completely understood. They are related to trauma, stress, hormones, and sometimes sensitivity to certain additives in products, such as SLS. So if any of these thing change for you during the fall and winter then you may experience an increase in frequency of aphthous ulcers.

Summer: There may be a seasonal tendency for canker sore outbreaks. If there is, it seems that people tend to get them more during the summer months.

Summer: People tend to have more outbreaks during the hotter months...hard to exactly say why.

Summer most: common time to have them but can happen throughout the year.