Bell's Palsy (Acute Facial-Nerve Palsy)

The facial nerve controls the muscles of facial expression on one side of the face — forehead, eyelid, cheek, mouth — and runs through a narrow bony canal inside the skull. Bell's palsy is inflammation and swelling of that nerve, most often triggered by reactivation of herpes simplex virus, compressing it in the canal and temporarily cutting signal to the muscles. Grading uses the House-Brackmann scale (I = normal, VI = complete paralysis). The critical clinical distinction is peripheral-vs-central facial palsy. Peripheral (Bell's) weakens the whole side including the forehead — asking someone to raise both eyebrows shows uneven wrinkling. Central (stroke) spares the forehead — both eyebrows still wrinkle evenly even though the mouth droops, because the upper face has bilateral cortical representation. Forehead sparing, new limb weakness, slurred speech, sudden severe headache, or double vision with face droop means HTJ A&E / 急诊 within the hour — the stroke window is tight. The cohorts we see in Seremban and Nilai: Senawang Industrial Park shift-workers with broken sleep after rotating shifts, Port Dickson retirees a week after a viral chest infection, Seremban Chinatown seniors with long-standing diabetes, daily Seremban–KL commuters who first noticed it in the morning mirror. Diagnosis is clinical; imaging at KPJ Seremban Specialist Hospital or HTJ is reserved for atypical presentations.

Ideally physio starts within the first two weeks, after the GP or HTJ clinic has confirmed Bell's palsy and started oral steroids (typically prednisolone 60–80 mg/day for 7 days, tapered). First session 60 minutes, RM 100–180 in a Seremban or Nilai private clinic, and we often arrange home visits for shift-workers or retirees whose eye care is a concern. Expect: full facial-nerve grading with House-Brackmann score and Sunnybrook scale, photograph or video baseline for tracking, eye-care review (artificial tears during the day, lubricating ointment and taping the eye closed at night to prevent corneal abrasion — this is the single most important early-phase task), chewing and swallowing assessment, and emotional check-in because Bell's palsy is visibly distressing. Plan in the acute phase (weeks 0–3): eye care, gentle symmetry awareness in a mirror, soft massage, avoiding high-effort face exercises, posture and neck mobility. Recovery phase (weeks 3–12): graded mirror-feedback exercises for individual muscle groups, slow and low-effort repetitions, biofeedback if available, speech-and-language therapy referral if eating or speaking is significantly affected. Later phase if synkinesis develops: targeted uncoupling exercises and, in selected cases, referral for botulinum-toxin review.

Bell's palsy recovery is slow because nerves regenerate slowly — roughly 1 mm per day once recovery starts. Full completeness of initial paralysis and early steroid timing drive the prognosis. Weeks 0–3: acute phase, steroids active, eye care is the daily focus. Weeks 3–12: most visible recovery happens here — around 70% of people get most facial movement back by 12 weeks with mild residual asymmetry only seen on close inspection. Months 3–6: slower gains, graded mirror-feedback exercises, neck-and-posture work, return to work for shift-workers and commuters usually possible earlier but eye protection outdoors remains important. Months 6–9: the plateau. What you have by now is approximately what you'll keep long-term; aggressive late-phase push rarely helps and can drive synkinesis. Months 9–18: synkinesis management for the 15–25% who develop unwanted co-contractions (eye closing when smiling, cheek twitching with blinking). Around 70% of people recover fully or near-fully; 15% have mild persistent weakness; the remaining 15% have moderate residual changes. Senawang Industrial Park shift-workers typically return to full duties by 3 months if the work is not safety-critical; Port Dickson retirees focus on eating, speaking, and social confidence goals. ENT or neurology review at HTJ or KPJ Seremban Specialist Hospital is warranted if no movement has returned by 3 months.

The single most important decision is peripheral-vs-central, and the tell is the forehead. Go straight to HTJ A&E / 急诊 within the hour if the face droops but the forehead still wrinkles evenly on both sides (forehead sparing), or if face droop comes with any of: new arm or leg weakness, slurred speech, sudden severe headache, loss of vision in one eye, double vision, or loss of balance. Those point to stroke and the treatment window for clot-busting therapy is tight — this is not a physio-clinic or GP-clinic decision. For a pattern that looks like Bell's palsy — whole side drooping including forehead, no limb symptoms, no severe headache — head to your GP, Klinik Kesihatan, or HTJ outpatient clinic the same day so oral steroids can start within 72 hours. Physio follows, ideally within the first two weeks, for eye care, facial re-education, and tracking of House-Brackmann recovery. Escalate back to the HTJ clinic or ENT at KPJ Seremban Specialist Hospital or Columbia Asia Seremban when: no movement has returned by 12 weeks, recovery stalls with troublesome synkinesis, eye closure remains incomplete risking corneal damage, hearing change or facial sensation loss develops, or pain behind the ear worsens rather than settles. Ramsay Hunt syndrome (herpes-zoster cause) and parotid-gland issues are the main things ENT will screen for in atypical cases.