Has anyone experienced shortness of breath or wheezing on Tarceva? My husband has been on it about three weeks. He has a terrible, terrible, rash on his face and upper body. He feels though that the wheezing and shortness of breath is worse. He is very tired and has no appetite since starting the Tarceva. Are these symptoms that will be less severe as the Tarceva gets in his system. His cough is just about gone.