I've gotten 1 small splinter hemorrhage on 1 fingernail (at top of nail) twice in the last few months. cause for concern or just normal wear & tear?

In vast majority of: cases due to nail/finger trauma. (Basis for concern, as 1 piece of diagnostic pattern, is recurring, multiple fingers & toes without apparent basis for injury plus unexplained, non-localizing symptoms & persistent fever for weeks which may be a result/sign of endocarditis or other intravascular infection shedding infected microclots through the arteries & creating the finger splinter hemorrhages.)