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Basic Neuroscience · Neuropharmacology

MS Symptomatic Management

Disease-modifying therapy slows MS; symptomatic management drives quality of life. Treat the symptoms that limit function — and always screen for reversible drivers (infection, sleep, mood, medication effects, heat) before escalating. Doses are typical adult ranges; individualize and titrate.

SymptomTreatment optionsClinical notes & cautions
Motor & mobility
Spasticity
  • Baclofen (start 5 mg TID, titrate)
  • Tizanidine; gabapentin; benzodiazepines
  • Botulinum toxin — focal spasticity
  • Intrathecal baclofen pump — severe
  • Don’t abolish useful extensor tone (aids standing)
  • ⚠ Avoid abrupt baclofen withdrawal
  • Tizanidine: sedation, hypotension, check LFTs
  • Pair with stretching / PT
Gait / walking speed
  • Dalfampridine (Ampyra) 10 mg PO BID
  • Physical therapy, gait aids
  • K⁺-channel blocker — improves walking speed in ~1/3
  • ⚠ Contraindicated: seizure history, CrCl ≤50
  • Don’t crush the ER tablet
Tremor
  • Clonazepam, propranolol, primidone, topiramate
  • Thalamic DBS — refractory
  • Often the hardest MS symptom to treat
  • OT strategies, wrist weights
Fatigue & sleep
Fatigue
  • Amantadine 100 mg BID
  • Modafinil / armodafinil
  • Methylphenidate
  • Exercise & sleep hygiene
  • First exclude depression, sleep disorder, thyroid, anemia, deconditioning, sedating meds
  • Trial evidence modest — amantadine/modafinil/methylphenidate no better than placebo (TRIUMPHANT-MS)
  • Avoid late-day stimulants
Mood, affect & cognition
Depression / anxiety
  • SSRIs (sertraline, escitalopram)
  • SNRIs (duloxetine, venlafaxine)
  • Psychotherapy / CBT
  • ⚠ Depression & suicide risk are elevated in MS — screen actively
  • Interferon-β labels warn of depression / suicidal ideation — monitor mood
  • Duloxetine / venlafaxine also help neuropathic pain
Pseudobulbar affect
  • Dextromethorphan / quinidine (Nuedexta)
  • SSRIs or TCAs (off-label)
  • Involuntary laughing/crying incongruent with mood — distinguish from depression
  • Quinidine: QT prolongation, CYP2D6 interactions
Cognitive impairment
  • Cognitive rehabilitation
  • Treat fatigue, mood, sleep
  • No pharmacotherapy proven (donepezil negative)
  • Optimize DMT, fatigue, depression, and sleep first
Sensory & paroxysmal
Neuropathic pain / dysesthesia
  • Gabapentin, pregabalin
  • Duloxetine, amitriptyline
  • Central pain & painful tonic spasms are common
  • TCAs: anticholinergic load (worsens bladder retention, cognition) — use cautiously
Trigeminal neuralgia / paroxysmal symptoms
  • Carbamazepine, oxcarbazepine
  • Acetazolamide, lamotrigine, gabapentin (tonic spasms)
  • MS is a key secondary cause — suspect in young/bilateral cases, get MRI
  • Monitor Na⁺ (hyponatremia) & CBC on carbamazepine/oxcarbazepine
  • Microvascular decompression / rhizotomy if refractory
Heat sensitivity (Uhthoff)
  • Cooling (garments, pre-cooling)
  • Avoid heat / fever
  • Transient pseudo-relapse from raised body temperature — not a true relapse
  • Don’t treat with steroids; treat fever / infection
Bladder, bowel & sexual
Bladder — urgency / overactivity
  • Antimuscarinics (oxybutynin, solifenacin, tolterodine)
  • Mirabegron (β3-agonist)
  • Intradetrusor onabotulinumtoxinA
  • ⚠ Check post-void residual first — anticholinergics worsen incomplete emptying
  • Antimuscarinics add anticholinergic / cognitive burden; mirabegron avoids it
  • Treat UTIs
Bladder — incomplete emptying / DSD
  • Clean intermittent catheterization
  • Treat / monitor for UTI
  • Detrusor–sphincter dyssynergia → high residuals, recurrent UTIs, reflux
  • Urology / urodynamics for mixed patterns
Bowel (constipation)
  • Fluids, fiber
  • Scheduled bowel program, laxatives
  • Very common; address before it worsens bladder & spasticity
Sexual dysfunction
  • PDE5 inhibitors (sildenafil, tadalafil) for erectile dysfunction
  • Lubricants, pelvic-floor therapy, counseling
  • Often multifactorial — also treat fatigue, spasticity, mood, offending meds (SSRIs)
  • ⚠ PDE5 inhibitors contraindicated with nitrates
Principles: (1) Screen for reversible drivers first — infection/UTI, sleep, mood, heat, deconditioning, sedating meds. (2) Beware stacking anticholinergic burden (bladder + TCA + antispasticity) → cognition & retention. (3) A heat- or infection-related worsening (Uhthoff) is a pseudo-relapse, not a reason for steroids. (4) One drug can hit two targets — duloxetine (mood + pain), gabapentin (pain + spasticity).

Neuro-Pharmacology — NeurologyResident.Net by Ahmed Koriesh