A member asked:

Could a fever between 101-103 for like two days cause canker sores?

A doctor has provided 1 answer

Yes: Canker sores or aphthous ulcers can be as a result of illness or weakened immune systems. They are opportunistic in origin. They can be caused by different triggers. So having a high fever which may be due to sickness, you may be prone to an outbreak.

Answered 4/8/2014

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Is it common to get fevers when you have severe canker sores?

2 doctors weighed in across 2 answers