Drug-Induced Throat Pain
Medication side effects can cause throat pain through allergic reactions, drug-induced inflammation, or infection-like upper respiratory tract adverse events. Examples include angioedema from ACE inhibitors and hypersensitivity reactions involving the throat from NSAIDs. (pmc.ncbi.nlm.nih.gov)
Medication Classes That Commonly Involve Throat Symptoms
- Angiotensin-converting enzyme (ACE) inhibitors (including agents such as lisinopril and enalapril) can cause angioedema presenting with swelling of the throat and related symptoms. [1] (pmc.ncbi.nlm.nih.gov)
- NSAIDs (including ibuprofen and other nonsteroidal anti-inflammatory drugs) can cause allergic reactions that may include swollen throat. [2] (nhs.uk)
- Immune checkpoint inhibitors (including pembrolizumab) can cause immune-related mucosal or infectious-syndrome adverse effects in which sore throat/very bad sore throat may occur. [3] (mskcc.org)
Examples of Specific Drugs Reported With Pharyngitis Throat Pain
- Minocycline can be associated with DRESS syndrome, which may include respiratory symptoms such as pharyngitis. [4] (pmc.ncbi.nlm.nih.gov)
- Anti-HER2 therapies (examples include pertuzumab, trastuzumab emtansine (T-DM1), and trastuzumab deruxtecan (T-DXd)) can be associated with upper respiratory tract adverse events that include pharyngitis. [5] (nhs.uk)
Important Clinical Nuances
- Throat pain related to allergic reactions may occur with accompanying signs such as throat or tongue swelling. [1] (mft.nhs.uk)
- Throat pain related to immune or drug-induced inflammatory syndromes may occur without typical bacterial infection findings. [3] (mskcc.org)
- Some drug-related throat complaints occur in the context of broader upper respiratory tract syndrome adverse events. [5] (nhs.uk)
Recognition for Urgent Evaluation
- Angioedema involving the throat can be a potentially life-threatening medication reaction and warrants urgent assessment when it is suspected. [1] (pmc.ncbi.nlm.nih.gov)
- An allergic reaction from NSAIDs may present with swollen throat and should prompt urgent evaluation when symptoms suggest airway involvement. [2] (nhs.uk)
Common Pitfalls to Avoid
- Throat pain that begins shortly after starting a new medication is often attributed to infection, even though medication adverse effects including hypersensitivity or immune-related reactions can present with throat symptoms. [1] (pmc.ncbi.nlm.nih.gov)
- Discontinuation decisions should not be delayed when throat symptoms suggest angioedema or anaphylaxis, since these conditions may involve rapid progression. [1] (mft.nhs.uk)
Medication List Refinement for Clinical Triage
Medication review should focus on agents started or dose-changed within the preceding days to weeks, including ACE inhibitors, NSAIDs, and recently initiated cancer immunotherapies or targeted therapies. [1] (pmc.ncbi.nlm.nih.gov)