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Thinking Outside the Checkbox.

Maki Kanamori1, Gurpreet Dhaliwal2,3, Masami Matsumura4

  • 1Department of General Internal Medicine, Kobe City Medical Center General Hospital, Kobe, Japan. maki1152@kcho.jp.

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Summary
This summary is machine-generated.

A persistent dry cough in a healthy adult male, unresponsive to antibiotics and standard respiratory treatments, highlights a diagnostic challenge. Further investigation is needed for this unexplained respiratory symptom.

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Area of Science:

  • Pulmonology
  • Internal Medicine
  • Diagnostic Challenges

Background:

  • A 34-year-old Japanese man presented with a persistent dry cough.
  • He denied other common respiratory symptoms like dyspnea or sore throat.
  • Symptoms were refractory to multiple courses of antibiotics (clarithromycin, minocycline, levofloxacin).

Purpose of the Study:

  • To document a case of prolonged, unexplained dry cough.
  • To highlight the diagnostic difficulties in cases unresponsive to empirical treatments.

Main Methods:

  • Clinical case presentation.
  • Review of diagnostic workup including chest imaging and microbiological cultures.
  • Documentation of failed therapeutic interventions.

Main Results:

  • Initial investigations including chest X-ray and CT scan were normal.
  • Bacterial and mycobacterial sputum cultures yielded no growth.
  • Empirical antibiotic and inhaled corticosteroid/long-acting beta-agonist treatments (salmeterol/fluticasone) were ineffective.

Conclusions:

  • Persistent dry cough can present diagnostic challenges even with normal imaging and negative cultures.
  • Refractory respiratory symptoms warrant a thorough re-evaluation beyond standard protocols.