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.
Causes of sore throats range from infections to injuries. Here are eight of the most common sore throat causes. 1. Colds, the flu, and other viral infections. Viruses cause about 90 percent of sore throats . Among the viruses that cause sore throats are: the common cold; influenza â the flu