Disorders of Sensory system

Question 1

What is Dysthesia?

Answer 1

All types of abnormal sensations- even painful ones, whether stimulus is evident or not.

Question 2

What is Hypoesthesia?

Answer 2

Reduction of cutaneous sensation to a specific type of testing such as pressure, light touch, warm or cold stimuli

Question 3

Which pathology is associated with causing a glove-and-stocking’ impairment of superficial sensation?

Answer 3

Vitamin B12 deficiency

Question 4

What are clinical presentations of Wallenberg syndrome?

Answer 4

Lesion in the lateral medulla which involves :
- Pain and Temperature loss of Ipsilateral face and neck.

• Pain and Temperature loss of Comtralateral limbs and trunks.
• Ipsilateral Horner’s syndrome
• Vertigo
• Nystagmus
• Hoarseness
• Dysphagia

Question 5

What sensations are lost in Guillian - Barre syndrome?

Answer 5

Fine touch & vibration are lost.

Question 6

What sensations are lost in Alcohol neuropathy ?

Answer 6

Pain & Temperature ( smaller nerve fibres affected first)

Question 7

Which neurons are first affected in Diffuse neuropathy?

Answer 7

Longest neurons

Question 8

What are the clinical features of a Polyneuropathies?

Answer 8

• symmetrical sensory disturbance, more pronounced distally.
• usually starts on the toes, gradually spreads higher, rarely above the knee; later on the hands