Management of Chronic Cough in First Trimester Pregnancy

Initial Assessment and Diagnosis

The American College of Chest Physicians recommends a systematic evaluation for the three most common causes of chronic cough—upper airway cough syndrome (UACS), asthma, and gastroesophageal reflux disease (GERD)—which account for over 80% of chronic cough cases in pregnant women 1, 2
Upper airway cough syndrome (UACS) is the most common cause of chronic cough, presenting with postnasal drip, throat clearing, nasal discharge, or sensation of drainage 1, 2
Asthma may present as cough-variant asthma without wheezing, and should be considered in the differential diagnosis 1
Gastroesophageal reflux disease (GERD) should be considered, especially if the patient has heartburn, regurgitation, or sour taste, though it can be "silent" without GI symptoms 3, 4

The American College of Chest Physicians recommends saline nasal irrigation and humidification as first-line, pregnancy-safe interventions for UACS 1
Intranasal corticosteroids are generally considered safer in pregnancy than oral antihistamines and can be used for persistent nasal symptoms 2
Inhaled corticosteroids are generally considered safe in pregnancy and should be used if asthma is diagnosed 1
Dietary and lifestyle modifications, such as avoiding foods high in fat, coffee, tea, soda, chocolate, mints, citrus, tomatoes, and alcohol, and elevating the head of the bed, can help manage GERD symptoms 4, 6
Acid suppression therapy with proton pump inhibitors (PPIs) is generally considered safe in pregnancy, though data are limited 3, 6

First-generation antihistamines and decongestants should be avoided during the first trimester due to potential teratogenic concerns 1, 2
Codeine and dextromethorphan should be used with extreme caution in the first trimester 7
Theophylline has a narrow therapeutic index and is not recommended even in non-pregnant patients 7, 8

Red flags requiring immediate further investigation include fever, night sweats, weight loss, hemoptysis, history of tuberculosis or cancer, or abnormal chest radiograph findings 1
If empiric treatment fails, reassess medication adherence and environmental triggers, and consider referral to pulmonology or otolaryngology for specialized evaluation 7
Defer advanced testing, such as CT chest or bronchoscopy, until after the first trimester if possible, unless red flags are present 5