 [ Symptoms ] should i be worried because my month old grandson rarely follows things with his eyes [ Disease ] yes bloody diarrhea is concerning and should be evaluated immediately by a doctor bloody diarrhea due to e coli 0157h7 infection can sometimes have severe complications bloody diarrhea can also be caused by salmonella shigella and campylobacter infections there are some other serious non infection related conditions that can also be associated with bloody diarrhea that should be evaluated by a doctor hope this helps take care