Have you ever experienced a toothache that seems to affect your whole body? Tooth pain is commonly due to infection. If this condition is left neglected, there is a possibility for the infection to spread. But can a tooth infection cause fatigue? The answer is a solid yes. A tooth infection can have many other side effects, such as chronic tiredness and a runny nose. Go to Dental Excellence’s clinic in Canberra and see if you need root canal treatment for your toothache.