frilled dragon

i bought a frilled dragon when he wa 4-5 months old. i have had her for a year now wth no problems, but all of a sudden she isnt nterested in food. know this cant be normal. any advice? i already took her to a vet, gave me meds to give her but no changes. she is in a hugh cage by her self. temperture vary from 105 - 80 also have a fogger and i spray her with water 2 tmes a day.