Signs of Upper Motor Neuron and Lower Motor Neuron Lesions

Question 1

sign:
weakness

Upper motor neuron lesions?

Lower motor neuron lesions?

Answer 1

yes;yes

Question 2

sign:
atrophy

Upper motor neuron lesions?

Lower motor neuron lesions?

Answer 2

no, mild atrophy due to disuse; yes

Question 3

sign:
fasciculations

Upper motor neuron lesions?

Lower motor neuron lesions?

Answer 3

no;yes

Question 4

sign:
reflexes

Upper motor neuron lesions?

Lower motor neuron lesions?

Answer 4

increased, upper motor lesions and decreased tone; decreased

Question 5

sign:
tone

Upper motor neuron lesions?

Lower motor neuron lesions?

Answer 5

increased, upper motor lesions and decreased tone; decreased