Differential Diagnosis for Post Tooth Extraction Pharyngitis
Single Most Likely Diagnosis
- Acute Viral Pharyngitis: This is the most common cause of pharyngitis and can be triggered by the stress and minor trauma of a tooth extraction. The proximity of the extraction site to the pharynx and the potential for viral reactivation or exposure during the procedure make this a highly plausible diagnosis.
Other Likely Diagnoses
- Bacterial Pharyngitis: Bacteria such as Streptococcus pyogenes can cause pharyngitis, especially if there is an open wound in the mouth from the extraction that becomes infected.
- Irritation from Extraction: The act of tooth extraction itself can cause irritation and inflammation of the pharynx, especially if there was significant manipulation or if the patient had to keep their mouth open for an extended period.
- Dry Socket (Alveolar Osteitis): While not directly causing pharyngitis, the pain and discomfort from a dry socket can radiate and be referred to the throat, mimicking pharyngitis symptoms.
Do Not Miss Diagnoses
- Ludwig's Angina: A severe infection of the submandibular space that can cause significant swelling and potentially life-threatening airway obstruction. It's a rare but critical complication of dental infections.
- Retropharyngeal Abscess: An abscess in the tissues in the back of the throat, which can lead to severe complications including airway obstruction and mediastinitis if not promptly treated.
- Epiglottitis: Inflammation of the epiglottis that can cause severe swelling and potentially life-threatening airway obstruction. Though more commonly associated with Haemophilus influenzae type b in children, it can occur in adults, especially those with compromised immune systems.
Rare Diagnoses
- Actinomycosis: A rare chronic bacterial infection that can affect the face and neck, including the pharynx, and is associated with dental procedures or poor dental hygiene.
- Tuberculous Pharyngitis: A rare form of tuberculosis that affects the pharynx, more common in immunocompromised individuals or those from areas with high TB prevalence.
- Syphilitic Pharyngitis: A manifestation of secondary syphilis, which can cause a variety of symptoms including pharyngitis, especially in individuals with untreated syphilis infection.