EmergencyEmergency Guide
Throat tightness: Red Flags & Emergency Signs
Throat tightness with breathing difficulty or swelling of the lips and tongue is anaphylaxis until proven otherwise — use an adrenaline auto-injector immediately and call 999.
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If you have this symptom right now
Call 999 (UK) / 112 (EU) / 911 (US) immediately if any emergency warning signs are present. Do not drive yourself. Do not wait to see if it improves.
🚨 Call 999 / 112 Immediately
- ⚠Throat tightness with lip/tongue swelling and hives after eating or medication — anaphylaxis
- ⚠Throat tightness with stridor (high-pitched inspiratory noise) — severe upper airway compromise
- ⚠Throat tightness rapidly worsening over minutes — angioedema
- ⚠Throat tightness in a patient on ACE inhibitor — ACE-inhibitor-induced angioedema
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- •Throat tightness with fever and drooling in an adult — epiglottitis (do not examine throat)
- •Throat tightness with muffled voice in a patient with dental abscess — peritonsillar abscess or Ludwig's angina
High-Risk Combinations
When throat tightness occurs together with any of these symptoms, urgency increases significantly:
Conditions to Rule Out Urgently
Anaphylaxisemergency
IM adrenaline 0.5mg; 999; lie flat with legs elevated
Epiglottitisemergency
Do not examine throat; IV antibiotics; ENT + anaesthetics
ACE-Inhibitor Angioedemaurgent
Stop ACE inhibitor; IV icatibant or fresh frozen plasma
Condition Authority Pages
Differential diagnosis analyses:
When to Call Emergency Services
- →Any throat tightness with breathing difficulty
- →Swelling of lips, tongue, or face alongside throat tightness
- →Known allergy — use adrenaline auto-injector and call 999 simultaneously