What are the symptoms of a peritonsillar abscess (PTA)?

Medical Advisory BoardAll articles are reviewed for accuracy by our Medical Advisory Board
Educational purpose only • Exercise caution as content is pending human review
Article Review Status
Submitted
Under Review
Approved

Last updated: April 29, 2025View editorial policy

Personalize

Help us tailor your experience

Which best describes you? Your choice helps us use language that's most understandable for you.

From the Guidelines

A peritonsillar abscess is characterized by severe sore throat, difficulty swallowing, trismus, fever, and bad breath, and requires immediate medical attention. The symptoms of a peritonsillar abscess can be identified using clinical scoring criteria, such as the modified Centor criteria, which include fever by history, tonsillar exudates, tender anterior cervical adenopathy, and absence of cough 1. However, patients who present with unusually severe signs and symptoms, such as difficulty swallowing, drooling, neck tenderness, or swelling, should be evaluated for rare throat infections, including peritonsillar abscess 1.

Key Symptoms

  • Severe sore throat that is typically worse on one side
  • Difficulty and pain when swallowing (odynophagia)
  • Muffled or "hot potato" voice
  • Trismus (limited ability to open the mouth)
  • Fever
  • Malaise
  • Bad breath
  • Drooling due to painful swallowing
  • Neck pain
  • Ear pain on the affected side
  • Swollen lymph nodes in the neck These symptoms develop as pus collects in the space between the tonsil and its surrounding muscle, creating pressure and inflammation. Prompt treatment with antibiotics and drainage of the abscess is necessary to prevent serious complications. According to recent data, Fusobacterium necrophorum is implicated in approximately 10% of peritonsillar abscess cases, highlighting the importance of proper diagnosis and treatment 1.

From the Research

Symptoms of Peritonsillar Abscess

The symptoms of peritonsillar abscess include:

  • Fever 2, 3
  • Sore throat 2, 3
  • Dysphagia (difficulty swallowing) 2
  • Trismus (lockjaw) 2, 3
  • A "hot potato" voice 2
  • Throat pain 3, 4

Diagnosis and Treatment

Diagnosis of peritonsillar abscess is usually made on the basis of clinical presentation and examination 2. Treatment options include:

  • Drainage of the abscess 2, 3, 5, 6
  • Antibiotic therapy 2, 3, 5, 4
  • Supportive therapy for maintaining hydration and pain control 2
  • Corticosteroids to reduce symptoms and speed recovery 2
  • Needle aspiration 3, 5, 6, 4
  • Incision and drainage 3, 5, 6
  • Tonsillectomy 3, 5, 6

References

Guideline

Guideline Directed Topic Overview

Dr.Oracle Medical Advisory Board & Editors, 2025

Research

Peritonsillar Abscess.

American family physician, 2017

Research

Peritonsillar abscess: diagnosis and treatment.

American family physician, 2002

Research

Peritonsillar infections.

Otolaryngologic clinics of North America, 1987

Professional Medical Disclaimer

This information is intended for healthcare professionals. Any medical decision-making should rely on clinical judgment and independently verified information. The content provided herein does not replace professional discretion and should be considered supplementary to established clinical guidelines. Healthcare providers should verify all information against primary literature and current practice standards before application in patient care. Dr.Oracle assumes no liability for clinical decisions based on this content.

Have a follow-up question?

Our Medical A.I. is used by practicing medical doctors at top research institutions around the world. Ask any follow up question and get world-class guideline-backed answers instantly.