Problems can range from anxieties and worries caused by everyday life, to more serious long-term conditions such as severe depression, bipolar disorder, psychosis and schizophrenia.
Gall y problemau amrywio o ofidiau a phryderon beunyddiol i gyflyrau difrifol, hirdymor megis iselder difrifol, anhwylder deubegynol, seicosis a sgitsoffrenia.