UMN/LMN DDx Flashcards
What are the symptoms of an UMN disease?
Tone: hypertonic/spasticity
Reflexes: hyperreflexia
Strength: weakness
Involuntary movements: spasm, intention tremors etc
What are the symptoms of a LMN disease?
Tone: flaccidity
Reflexes: hypo reflex is
Strength: weakness
Involuntary movements: fasciculations
What are the UMN diseases?
Stroke, SCI, MS, TBI
What are the LMN diseases?
GBS
Stroke
UMN
Sensory: Sensory+motor impaired or absent (depends on lesion)
Tone: hypertonic/spasticity; initial flaccidity during cerebral shock
Reflexes: hyperreflexia
Strength: contralateral weakness or paralysis
Muscle: normal during acute & disuse atrophy in chronic
Involuntary movements: spasm
Impaired balance
BRUNNSTROMS STAGES OF RECOVERY
SCI
UMN
Sensation/motor: sensory+motor impaired or absent below the level of lesion
Tone: spasticity below the level of lesion. Initial flaccidity during spinal shock
Reflexes: hyperreflexia
Strength: paraplegia/paresis; tetraplegia/paresis
Muscle: disuse atrophy
Involuntary movements: spasms
Parkinson’s Disease
LMN?? UMN???
Sensation not affected
Tone: rigidity/leadpipe uniform resistance, cogwheel ratchet like
Reflexes: normal or decreased
Strength: disuse weakness in the chronic stage
Muscle: disuse atrophy or normal
Involuntary movements: resting tremor
Stooped posture
Festinating gait, on-off phenomenon of drugs, pill rolling tremors, rigidity
GBS
LMN (autoimmune disease affecting the PNS)
Sensation/motor: motor+sensory distal extremities more affected than proximal/symmetrical
Tone: flaccidity
Reflexes: hyporeflexia
Strength: B/L distal to proximal muscle weakness
Muscle: muscle atrophy, weakness
NO INVOLUNTARY MOVEMENTS
Rapid onset of weakness with bilateral symptoms peaking at 2-3 weeks progressing no greater than 4 weeks
ALS
UMN+LMN (motor neuron disease)
Motor/sensation: pure MOTOR condition/asymmetrical
Tone: spasticity/hypotonicity
Reflexes: Hyper/hyporeflexia
Strength: weakness/atrophy
Involuntary movements: fasciculations
Posture is normal initially until deterioration and they are WC bound
Pt has pseudobulbar and bulbar palsy
MS
UMN (demyelination of axons and white matter)
Motor and sensory affected
Tone: spasticity
Reflexes: hyperreflexia
Strength: weakness can vary from mild to total paralysis
Muscle: atrophy 2’ inactivity/disuse
Involuntary movements: intention and postural tremors can occur, spasms
Uthoff’s phenomenon, Lhermitte’s sign, pseudobulbar effect, Marcus Gunn pupil, optic neuritis
MG
Disorder of NMJ autoimmune condition
Pure motor, proximal muscles more affected than distal
Strength: weakness worsens with activity
Fatigable and rapidly fluctuating asymmetric proxies is a hallmark of the problem.
Symptoms show a fluctuation in intensity and are more severe late in the day or after prolonged activity
What is the scale for Parkinson’s disease?
Hoen and Yahr
What is stage one Hoehn and Yahr?
Minimal or absent disability, UNILATERAL
What is stage 2 Hoehn and Yahr?
Minimal bilateral or midline involvement, no balance involvement
(2 for both sides beginning to be affected)_
Hoehn and Yahr stage 3?
Impaired balance, some restrictions in activity
Hoehn and Yahr stave IV?
All symptoms present and severe, stands and walks only WITH ASSISTANCE
Hoehn and Yahr stage V?
Confinement to WC or bed
Stage I of ALS?
Early disease, mild focal weakness, asymmetrical distribution; symptoms of hand cramping and fasciculations