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Onset Patterns
- Sudden: vascular, seizure
- Hours-days: infection
- Weeks: tumor, autoimmune
- Months-years: degenerative
- Fluctuating: NMJ
- Relapsing-remitting: MS
UMN vs LMN Distinction
- UMN: â tone, â reflexes, Babinski, atrophy late
- LMN: â tone, â reflexes, atrophy early, fasciculations
GCS
- E (1-4) + V (1-5) + M (1-6) = 3-15
CT Indications
- Acute hemorrhage
- Trauma
- Bone
MRI Sequences
- T1: anatomy
- T2: pathology
- FLAIR: lesions, MS
- DWI: stroke
- T2*/SWI: microbleeds
- Gadolinium: enhancement
CSF Patterns
- Bacterial: ââ PMN, ââ protein, â glucose
- Viral: â lymphs, â mild, normal
- TB: â lymphs, ââ protein, â glucose
- MS: OCB
- GBS: albuminocytologic dissociation
EMG Patterns
- Axonal: â amplitude
- Demyelinating: â conduction velocity, conduction block
Cortical Localization
- Frontal: behavior, executive, expressive language (Broca)
- Parietal: sensory, neglect (right)
- Temporal: memory, receptive language (Wernicke)
- Occipital: vision
Brainstem Localization
- Crossed signs (CN one side, body other)
- Pupil + eye movements + consciousness
Spinal Cord Levels
- C4 below: phrenic, respiration
- C5: shoulder/elbow flexion
- C6: wrist extension
- C7: elbow extension
- C8: finger flexion
- T1: finger abduction
- L2-L4: hip flexion, knee extension
- L5: dorsiflexion
- S1: plantarflexion