My son is 6 years old and very active. However, it seems as though he has a constant runny nose and keeps lapsing into a head cold accompanied with cough. It clears up but is always left with runny nose. He urinates frequently but does consume a healthy amount of fluids. He does pass a good amount when he goes. He also gets extremely pale in the face when he gets tired. Are these symptoms all associated with one another or are we dealing with different issues? Are these issues at all?