In stochastic processes, chaos theory and time series analysis, detrended fluctuation analysis (DFA) is a method for determining the statistical self-affinity of a signal.
Sore throats caused by tonsillitis or streptococcus may trigger a canker sore even after the initial throat condition has subsided. Also known as an aphthous ulcer, canker sores are painful and unsightly, but they are not contagious.
The simple answer is no. Canker sores are generally inside the mouth or the oral cavity and are not contagious. However, fever blisters mostly occur on the lips and outside of the mouth and are very contagious. Fever blisters, or cold sores, are infections caused by the herpes simplex virus (HSV). This answer should not be considered medical advice...This answer should not be considered medical advice and should not take the place of a doctorâs visit.