Hello dear, Sore throat associated with redness & blisters on the back of throat indicate that you might be having Pharyngitis. Management includes: 1. Gargle with warm salt water to relieve throat pain. 2. Analgesics like paracetamol 3. Antibiotics depending upon culture & sensitivity reports to remove the causative organism. 4. Antihistamine preparations can also be used to provide symptomatic relief. 5. Avoid taking cold food & drinks, maintain adequate hydration & take soft, non-spicy foods. If the symptoms persist, kindly consult an ENT specialist & get a complete clinical examination done. Investigations like Laryngoscopy & upper GI endoscopy will be helpful to rule out any pathological reason for the symptoms. Take care.