Management of Nightly Cough in Elderly Males

Introduction to Cough Management

The American College of Chest Physicians guidelines state that newer-generation antihistamines such as terfenadine, loratadine, and combinations with pseudoephedrine were found to be ineffective in treating acute cough, highlighting the importance of choosing the right antihistamine for cough treatment 1, 2
Newer-generation antihistamines, including loratadine, the parent compound of desloratadine, have been specifically studied and found to be ineffective for treating acute cough associated with upper airway conditions, due to their lack of anticholinergic properties 1, 2
The mechanism of action matters: newer antihistamines lack the anticholinergic properties that make first-generation antihistamines effective for cough suppression, which is crucial for treating cough symptoms 1, 2

First-generation antihistamines are the evidence-based choice for nighttime cough because they work through anticholinergic effects, not just histamine blockade, and have been consistently shown to be efficacious in randomized controlled trials for cough 1, 2
The combination of first-generation antihistamines (e.g., dexbrompheniramine 6 mg bid or azatadine 1 mg bid) plus pseudoephedrine (120 mg bid) has been consistently shown to be efficacious in randomized controlled trials for cough, but requires careful screening for contraindications in elderly males 1, 2
Sedating antihistamines are particularly suitable for nocturnal cough specifically because the sedation side effect becomes therapeutic at bedtime, making them a useful treatment option for elderly males with nightly cough 3

Difficulty with urination is a primary concern in older men, particularly those with benign prostatic hypertrophy, when using anticholinergic medications, and requires careful screening before prescribing 1, 2
Increased intraocular pressure in patients with glaucoma is another major concern with anticholinergic agents, and requires careful screening before prescribing 1, 2
The decongestant component (pseudoephedrine) can cause insomnia, difficulty with urination, jitteriness, tachycardia or palpitations, and worsening of hypertension, and requires careful consideration before prescribing 1, 2

Upper Airway Cough Syndrome (UACS, formerly postnasal drip) is the most common cause of chronic cough, and requires careful diagnosis and treatment 1, 2
Gastroesophageal reflux disease (GERD) is a common cause of cough in elderly males, particularly when lying down, and requires careful diagnosis and treatment 4
Asthma or reactive airways may present as nocturnal cough, and requires careful diagnosis and treatment 4
Medications, such as ACE inhibitors, are a common culprit in elderly patients with cough, and requires careful consideration before prescribing 2

For non-allergic rhinitis or postviral upper respiratory infection causing cough, use first-generation antihistamine (e.g., diphenhydramine 25-50 mg at bedtime or chlorpheniramine 4 mg at bedtime) ONLY if no contraindications exist, and screen carefully for benign prostatic hypertrophy, glaucoma, and urinary retention before prescribing 1, 2
For allergic rhinitis causing cough, intranasal corticosteroids are first-line, and desloratadine could be considered as adjunctive therapy for allergic rhinitis symptoms, but evidence does not support its use specifically for cough 1, 2
For dry, non-productive nighttime cough, simple remedies like honey may be as effective as pharmacological treatments, and dextromethorphan 30-60 mg at bedtime (not standard OTC doses which are subtherapeutic) may be useful 3
For productive cough, avoid cough suppressants entirely, as they may interfere with beneficial clearing of secretions, and focus on treating the underlying cause rather than suppressing the cough 8