It is probable that the incidence of<unk>  is widely under-reported due to both religious and social pressures, and possibly completely unreported in some areas. Nevertheless, from the known<unk> s, certain trends are apparent. However, since the data is skewed, attempts to compare<unk>  rates between nations is statistically unwise. The trends themselves are not the cause, but may be indicative of a root cause.
Epidemiology and methodology of suicide
Psychosis classification
Anxiety classification
Phobia diagnostic criteria
Concussion diagnostic criteria
List of neuroscience topics
Anxiety epidemiology and demographics
Delirium classification