Is it possible for pink eye to cause a sinus infection? Can I had pink eye first, now a sinus infection. Can a doctor prescribe something for this??

Chicken or Egg. Eye infections will drain into your inner nasolacrimal duct into your nose and sinuses. It is not uncommon to have patients with sinus infections and pink eye. Which one happens first can vary and whether or not one causes the other is sometimes hard to say.