Hay fever is one of the major reasons for persistent sore throat and allergies. On the other hand, people who are constantly exposed to industrial pollutants, heavy metals or Candida, suffer from chronic throat infection allergy. Nasal allergies can lead to itchy sore throat. Severe symptoms are usually caused due to consumption of foodstuff like sunflower seed, cucumber, zucchini, etc. It is very essential to identify the symptoms of this condition in order to treat and prevent it.