Hello and welcome to HCM, Sore throat with pain above the voice box indicates Laryngitis that is inflammation of larynx due to irritation of vocal cords that causes pain and horse voice. It is usually caused by cold or flu, allergies, smoking or acid refluxes. i suggest you to consult a ENT surgeon and get it diagnosed as soon as possible . mean time at home treament can be done by using vapourizer ,drinking lot of water and keeping yourself hydrated, avoid smoking and areas of smoke. take care.