What Causes Pain In Upper Dorsal Area And Chest?

HI MY MOM WAS COMPLAINING TONIGHT FORM A SARP PAON IN HER UPPER DORSAL AREA AND DESCRIBED IT AS IF ONE OF HER CLAVILAS WERE MISSPLACE AND THEN 2 HOURS LATTER SHE SAID THAT HER PAIN NOW MOVE TO HER CHEST AND SHE PONTED TO THE APEX OF HER HARET IS THIS SERIOUS