A.S.
As an allergy and asthma sufferer since childhood, I would suggest taking her to an allergist. At 7 they can determine what her triggers are and you can make some adjustments as needed and/or get her on some medicines that will help alleviate symptoms. My daughter started showing signs of allergies around that age as well. She is on a daily nose spray which has helped tremendously. Claritin/Zyrtec can certainly help but can make some kids tired or hyper so it's best to find out what is triggering the allergies. Good luck!