Continuous Mouth Twitching in a Seizure Patient

What Is It?

Epilepsia Partialis Continua (EPC)

• Definition: Persistent rhythmic clonic movements of one muscle group (face, arm, or leg) repeated at fairly regular intervals every few seconds, continuing for hours to months, without spread to other body parts.
• Facial involvement: The corner of the mouth or one/both eyelids are the most common facial sites affected.
• Consciousness: Typically preserved (no impaired awareness) - it is a focal seizure without altered awareness.
• EEG: Most patients show focal slow-wave abnormalities, sharp waves, or spikes over the central areas of the contralateral hemisphere. In some cases, scalp EEG may appear normal even during the event.
• Exacerbating factors: Clonic activity may be worsened by active or passive movement of the affected muscles.
• Sleep: Activity may reduce in severity but is not abolished during sleep.

Causes (Etiology)

Differential Diagnosis of Mouth Twitching

Management

Step 1 - Identify and Treat the Underlying Cause

• MRI brain (with and without contrast) - looking for cortical lesion, dysplasia, tumor, vascular malformation
• EEG (ideally with video-EEG) - to confirm ictal origin and lateralization
• Labs - glucose, electrolytes (especially sodium, calcium), metabolic panel
• CSF analysis if encephalitis or autoimmune cause suspected
• Autoimmune antibodies (anti-NMDAR, anti-VGKC, anti-GAD65, etc.)

Step 2 - Antiseizure Medications (ASMs)

Step 3 - Refractory EPC

• Add second or third agent (cenobamate, zonisamide, brivaracetam, topiramate, lacosamide)
• Do NOT escalate to anesthetic/therapeutic coma - unlike convulsive status epilepticus, EPC does not cause the same degree of neuronal injury if seizures remain confined, and aggressive sedation risks harm
• Reduce medication burden if side effects (especially somnolence) outweigh benefit
• Consider surgical evaluation if a clear focal resectable lesion is identified (e.g., cortical dysplasia, tumor)
• For Rasmussen encephalitis: hemispherectomy/functional hemispherotomy may be the only definitive treatment

Key Clinical Pearls

1. A "clonic or tonic contraction of one side of the face may be the sole manifestation of a cerebral cortical seizure" - scalp EEG may be normal even when the seizure is active, because the focus involves a very limited amount of motor cortex. (Adams and Victor's Principles of Neurology, 12th Ed.)
2. Carbamazepine is particularly highlighted for focal motor/perioral EPC despite general refractoriness.
3. Non-ketotic hyperglycemia is a reversible and treatable metabolic cause of EPC - always check blood glucose.
4. When the clinical picture is consistent but EEG is normal, do NOT dismiss the diagnosis - EPC is one of the few forms of status epilepticus where a normal scalp EEG is expected.
5. Approximately half of patients with convulsive generalized status epilepticus develop subsequent nonconvulsive (focal) seizures on continuous EEG monitoring - always consider this transition. (Rosen's Emergency Medicine)

Oral Antibiotics for UTI in Males

Why Male UTI Is Different

• Acute bacterial prostatitis (ABP)
• Chronic bacterial prostatitis (CBP)
• Pyelonephritis (upper tract involvement)

By Clinical Syndrome

1. Uncomplicated Cystitis in Males (Lower UTI, Afebrile)

Important: Nitrofurantoin does NOT reach significant tissue levels and must not be used if there is any concern for prostatic or upper tract involvement.

2. Prostatitis (Most Common Cause of Febrile UTI in Men)

Beta-lactams should not be used for prostatitis - they penetrate the prostate poorly.

3. Pyelonephritis (Upper Tract / Kidney Involvement)

Nitrofurantoin, fosfomycin, and pivmecillinam should NOT be used for pyelonephritis - they do not reach adequate renal parenchyma levels.

Quick Comparison Table

Key Principles

1. Always send a urine culture before starting antibiotics in men - culture guides therapy and confirms susceptibility.
2. The shorter durations used in women (3-day courses) are not adequate for men; minimum 7 days for cystitis.
3. If there is any doubt about prostatic involvement, use fluoroquinolones or TMP-SMX - they penetrate the prostate; beta-lactams do not.
4. Fluoroquinolones are highly effective but carry FDA warnings for rare serious toxicities (Achilles tendon rupture, peripheral neuropathy, aortic aneurysm/dissection) - they should be reserved for when other options are not suitable for uncomplicated cystitis, but remain preferred for prostatitis and pyelonephritis.
5. Treatment should be de-escalated or adjusted based on urine culture sensitivity results once available.

Note: A recent meta-analysis (2025) on short vs. long antibiotic courses for complicated UTIs supports shorter courses (5-7 days) being as effective as longer courses for pyelonephritis when treated with fluoroquinolones or TMP-SMX - reinforcing current guideline recommendations.

How to Differentiate Prostatitis from Cystitis

1. Clinical Features Comparison

Key rule: In men, any febrile UTI = prostatitis until proven otherwise. The prostate is involved in the majority of febrile UTIs in men. (Harrison's Principles of Internal Medicine, 22nd Ed., 2025)

2. Physical Examination

Caution: Vigorous prostate massage is contraindicated in acute bacterial prostatitis (ABP) - it can precipitate bacteremia and sepsis. A gentle palpation during DRE is sufficient.

3. NIH Classification of Prostatitis (Helps Understand the Spectrum)

4. Laboratory / Urine Tests

The Meares-Stamey Four-Glass Test (Now Largely Replaced)

• VB1 - first voided urine (urethral)
• VB2 - midstream urine (bladder)
• EPS - expressed prostatic secretions (after prostate massage)
• VB3 - first void after prostate massage (prostatic)

5. Imaging

6. Quick Diagnostic Summary

Fever + perineal/pelvic pain + voiding symptoms + tender boggy prostate on DRE
→ ACUTE BACTERIAL PROSTATITIS

Dysuria + frequency + urgency, NO fever, NO pelvic pain, normal DRE
→ CYSTITIS

Recurrent same-organism UTIs in a man + minimal systemic symptoms
→ CHRONIC BACTERIAL PROSTATITIS

Pelvic pain >3 months + negative cultures + voiding symptoms
→ CPPS (Type III prostatitis)

7. Why Getting This Right Matters

• Drug choice differs: Fluoroquinolones and TMP-SMX penetrate the prostate; beta-lactams do not - they are inadequate for prostatitis.
• Duration differs: Cystitis = 7 days; ABP = 2-4 weeks; CBP = 4-6 weeks (up to 12 weeks for recurrences).
• Treating cystitis-only when prostatitis is present leads to treatment failure and progression to chronic prostatitis.