Weakness Flashcards
Non specific weakness tends to be caused by?
Systemic illness
What are the 6 types of weakness?
1) Non specific
2) Functional
3) Upper motor neurone
4) Lower motor neurone
5) Neuromuscular junction
6) Muscle fibre
Myopathy causes what kind of weakness?
Muscle fibre
Stroke and intracranial tumour cause what kind of weakness?
UMN
MND, peripheral neuropathy, single nerve damage cause what kind of weakness?
LMN
Myasthenia causes what kind of weakness?
Myasthenia
What is meant by functional weakness?
Poor effort, pain or hysteria - no actual pathological reason for the weakness
If weakness was distributed across one side of the body, where is the likely cause?
Cerebral hemisphere
If weakness is distributed across all 4 limbs, where is the likely cause?
High cervical spinal cord
If weakness is distributed across both legs, where is the likely cause?
Low cervical spinal cord
If weakness is only in one limb, where is the likely cause?
Spinal root or peripheral nerve
Generalised distal muscle weakness is likely to be caused by what?
Peripheral neuropathy
Generalised proximal weakness is likely to be caused by what?
Myopathy
In UMN weakness is tone increased or decreased?
Increased
In UMN weakness are reflexes increased or decreased?
Increased
