Pathophysiology
- Viral etiology dominates: Most cases begin with a viral upper respiratory infection (rhinovirus, influenza, parainfluenza, RSV, adenovirus). Pathogens migrate from the upper respiratory tract to the bronchi, causing mucosal inflammation.
- Three bronchial changes: The bronchial epithelium swells (edema), cilia are damaged (impairing the mucociliary escalator), and goblet cells produce excessive mucus. Air moving through narrowed, mucus-laden passages produces the characteristic cough and wheezing.
- Cough evolution: Starts as a dry, irritative cough (from inflammation) and transitions to a productive cough (as mucus production increases). The cough may persist for 2–6 weeks after the acute infection resolves, because regenerating ciliated epithelium takes time to restore normal mucociliary clearance.
- Secondary bacterial infection: Occurs in a minority of cases, signaled by a change in sputum color from clear/white to green, yellow, or blood-streaked. Green/yellow sputum alone does not confirm bacterial infection (it can reflect neutrophil activity in viral infection), but combined with worsening fever, it raises clinical suspicion.
- No permanent damage: Unlike chronic bronchitis (a component of COPD), acute bronchitis does not cause irreversible airway changes. Full recovery is expected.
Signs and Symptoms
- Persistent cough lasting 2–6 weeks — starts dry, becomes productive with clear or white sputum
- Substernal or chest wall pain and soreness from forceful, repeated coughing
- Low-grade fever (usually < 101°F/38.3°C) — high fever suggests pneumonia
- Audible wheezing or rhonchi (low-pitched rattling sounds) that may partially clear with coughing
- Fatigue, mild malaise, and myalgias
- Nasal congestion and sore throat (residual from the preceding URI)
- Mildly ill appearance — the client is sick but not severely debilitated (unlike influenza or pneumonia)
Red Flags
- High fever (> 101°F/38.3°C), tachycardia (> 100 bpm), or tachypnea (> 24 breaths/min) — suggest pneumonia rather than simple bronchitis. Refer for medical evaluation
- Green, yellow, or blood-streaked sputum with worsening systemic symptoms — possible secondary bacterial infection. Medical referral
- Cyanosis (bluish lips, nail beds) — significant hypoxia beyond what acute bronchitis typically produces. Urgent referral
- Cough persisting beyond 6 weeks without improvement — consider other diagnoses (asthma, GERD, pertussis, malignancy). Medical referral
Massage Therapy Considerations
- Acute phase (first 7–10 days): Reschedule. The client's immune system is actively fighting infection, and massage increases metabolic demand. Additionally, viral bronchitis is contagious for the first 3–5 days — risk to the therapist and subsequent clients.
- Any fever contraindicates massage. Even low-grade fever (> 99.5°F/37.5°C) indicates active immune engagement. Do not proceed.
- When to treat: Massage is appropriate during the recovery phase — the systemic symptoms (fever, malaise, chills) have resolved, but the cough lingers. This is when the musculoskeletal consequences of weeks of persistent coughing become the primary complaint.
- Recovery-phase treatment targets: Accessory muscles of respiration (intercostals, scalenes, SCM, pectoralis minor, upper trapezius, diaphragm) are strained from weeks of forceful coughing. Address hypertonicity, trigger points, and fascial shortening in these muscles. Anterior chest wall stretching and diaphragmatic breathing education counteract the forward-flexed posture adopted during prolonged coughing.
- Positioning: Semi-supine (head elevated 30–45°), side-lying, or seated. Lying flat increases respiratory distress and can trigger coughing fits. Use extra pillows for upper body elevation.
- Avoid tapotement on the thorax: Heavy percussion (cupping, clapping) can trigger intense coughing or bronchospasm during the acute and early recovery phases. Reserve percussive techniques for late recovery only, and only if well tolerated.
- Hygiene: Enhanced infection control during the recovery phase — thorough hand hygiene (30-second scrub), ventilate the treatment room between clients, and consider whether the client is still potentially contagious.
CMTO Exam Relevance
- Category A7 — Systemic Conditions (Respiratory)
- Distinguish acute bronchitis (self-limiting, viral, no permanent damage) from chronic bronchitis (COPD component, irreversible) and pneumonia (alveolar infection, potentially life-threatening) — this is a commonly tested differential
- Know the fever/cough/sputum red flags that distinguish bronchitis from pneumonia
- The recovery-phase treatment rationale — treating coughing-related muscular strain, not the infection itself — demonstrates understanding of MT scope of practice
- Contagion awareness and the decision to reschedule are testable clinical judgment scenarios
Key Takeaways
- Acute bronchitis is a self-limiting viral inflammation of the bronchi that resolves in 2–6 weeks with no permanent lung damage
- Massage is contraindicated during the acute febrile phase (first 7–10 days) and appropriate during the recovery phase when only a residual cough persists
- Any fever contraindicates massage. High fever, tachycardia, tachypnea, or blood-streaked sputum suggest pneumonia and require medical referral
- During recovery, the primary treatment target is accessory respiratory muscle strain from weeks of persistent coughing — scalenes, intercostals, SCM, pectoralis minor
- Position clients semi-supine or side-lying with head elevated. Lying flat increases respiratory distress and triggers coughing
- Avoid heavy tapotement on the thorax during acute and early recovery phases — it can trigger bronchospasm
- Enhanced infection control measures are warranted. Viral bronchitis is contagious for the first 3–5 days