Movement disorders.
1๏ธโฃ Basal Ganglia
๐น Disorders: Parkinsonism, chorea, dystonia
๐น Clues: Resting tremor, rigidity, bradykinesia, abnormal postures
๐น Common causes: Parkinsonโs disease, Huntingtonโs disease, drugs, stroke
2๏ธโฃ Thalamus
๐น Disorders: Tremor, hemiballismus
๐น Clues: Contralateral involuntary movements
๐น Common causes: Stroke, hemorrhage, multiple sclerosis
3๏ธโฃ Cerebellum
๐น Disorders: Ataxia, intention tremor, dysmetria
๐น Clues: Gait instability, nystagmus, dysdiadochokinesia
๐น Common causes: Stroke, tumors, alcohol, multiple sclerosis
4๏ธโฃ Brainstem
๐น Disorders: Tremor, dystonia, parkinsonism
๐น Clues: Cranial nerve deficits with long tract signs
๐น Common causes: Stroke, tumors, neurodegenerative diseases
5๏ธโฃ Spinal Cord
๐น Disorders: Spasticity, clonus, segmental myoclonus
๐น Clues: UMN signs below the lesion with sensory level
๐น Common causes: Trauma, transverse myelitis, multiple sclerosis.
1๏ธโฃ Basal Ganglia
๐น Disorders: Parkinsonism, chorea, dystonia
๐น Clues: Resting tremor, rigidity, bradykinesia, abnormal postures
๐น Common causes: Parkinsonโs disease, Huntingtonโs disease, drugs, stroke
2๏ธโฃ Thalamus
๐น Disorders: Tremor, hemiballismus
๐น Clues: Contralateral involuntary movements
๐น Common causes: Stroke, hemorrhage, multiple sclerosis
3๏ธโฃ Cerebellum
๐น Disorders: Ataxia, intention tremor, dysmetria
๐น Clues: Gait instability, nystagmus, dysdiadochokinesia
๐น Common causes: Stroke, tumors, alcohol, multiple sclerosis
4๏ธโฃ Brainstem
๐น Disorders: Tremor, dystonia, parkinsonism
๐น Clues: Cranial nerve deficits with long tract signs
๐น Common causes: Stroke, tumors, neurodegenerative diseases
5๏ธโฃ Spinal Cord
๐น Disorders: Spasticity, clonus, segmental myoclonus
๐น Clues: UMN signs below the lesion with sensory level
๐น Common causes: Trauma, transverse myelitis, multiple sclerosis.
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6๏ธโฃ Motor Cortex
๐น Disorders: Focal motor seizures, apraxia, myoclonus
๐น Clues: Cortical signs, seizures, contralateral weakness
๐น Common causes: Stroke, tumors, encephalitis
7๏ธโฃ Peripheral Nerves
๐น Disorders: Fasciculations, weakness, occasional tremor
๐น Clues: LMN signs including atrophy and fasciculations
๐น Common causes: Peripheral neuropathy, entrapment, motor neuron disease
8๏ธโฃ Neuromuscular Junction / Muscle
๐น Disorders: Fatigable weakness, myopathies
๐น Clues: Ptosis, diplopia, proximal weakness, fatigability
๐น Common causes: Myasthenia gravis, inflammatory myopathies, muscular dystrophies
๐น Disorders: Focal motor seizures, apraxia, myoclonus
๐น Clues: Cortical signs, seizures, contralateral weakness
๐น Common causes: Stroke, tumors, encephalitis
7๏ธโฃ Peripheral Nerves
๐น Disorders: Fasciculations, weakness, occasional tremor
๐น Clues: LMN signs including atrophy and fasciculations
๐น Common causes: Peripheral neuropathy, entrapment, motor neuron disease
8๏ธโฃ Neuromuscular Junction / Muscle
๐น Disorders: Fatigable weakness, myopathies
๐น Clues: Ptosis, diplopia, proximal weakness, fatigability
๐น Common causes: Myasthenia gravis, inflammatory myopathies, muscular dystrophies
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