 [ Symptoms ] 10 yr old son  blood shot eye right eye on outside for almost 3 weeks no other issues is it time to see the doctor  do not want to go overboard about it but i do not want to find out there is damage and i did not do anything about it after two weeks it was getting much better almost disappeared but has come back with a vengeance looks worse than it did when it first began it did come on gradually he says it does not hurt or burn takes zyrtec daily for seasonal allergies he started the end of april and usually takes it until october he says he has not hit himself should he see an eye doctor [ Disease ] hypertension is high blood pressure blood pressure is the force of blood against the walls of arteries high blood pressure is dangerous because it makes the heart work harder to pump blood to the body and it is linked to clogging of the arteries