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Neurology > Multiple Sclerosis > Flashcards

Flashcards in Multiple Sclerosis Deck (17)
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1
Q

Which are 2 common symptoms of MS ?

A

Pain, experienced by >50% of patients. It can occur anywhere in the body and can change locations over time. Fatigue is experienced by 90% of patients and is the most common reason for work-related disability in MS.

2
Q

Unlike Bell’s Palsy, facial weakness in MS is usually NOT associated with… ?

A

Ipsilateral loss of taste sensation or retroauricular pain.

3
Q

Describe Internuclear Opthalmoplegia (INO)

A

INO consists of impaired eye adduction of one eye due to a lesion in the ipsilateral medial longitudinal fasciculus. Prominent nystagmus is often observed in the abducting eye, along with a small skew deviation.

4
Q

Well-established risk factors for MS ?

A

Genetic predisposition, vitamin D deficinecy, EBV exposure after early childhood, and cigarette smoking.

5
Q

Lesions located where are particularly helpful diagnostically ?

A

Lesion >6mm located in the corpus callosum, periventricular white matter, brainstem,cerebellum or spinal cord.

6
Q

Disorders possibly mistaken for MS include ?

A

Neuromyelitis optica, sarcoidosis, vascular disorders (antiphospholipid syndrome and vasculitis), rarely CNS lymphoma, syphilis or Lyme disease.

7
Q

Side effects of short-term glucocorticoid therapy ?

A

Fluid retention, potassium loss, weight gain, gastric disturbances, acne, emotional lability.

8
Q

Common side effects of IFN-β therapy ?

A

Flulike symptoms (fevers, chills, myalgias) and mild abnormalities on routine lab evaluation. (elevated LFTs or lymphopenia). Severe hepatotoxicity is rare. Depression, increased spasticity and cognitive changes have been reported.

9
Q

Side effects of glatiramer acetate ?

A

Injection-site reactions, 15% of patients also experience one or more episodes of flushing, chest tightness, dyspnea, palpitations, and anxiety after injection. Finally, some patients experience lipoatrophy.

10
Q

Important side effects of fingolimod ?

A

First- and second- degree heart block and bradycardia, disseminated varicella- zoster virus and cryptococcal infections and QT prolongation.

11
Q

Mechanism of action of Dimethyl Fumarate (DMF) ?

A

Inhibits the ubiquitylation and degradation of nuclear factor E2-related factor (Nrf2)-a transcription factor that binds to the antioxidant response elements (AREs) located on the DNA, thereby inducing the transcription of several antioxidant proteins.

12
Q

Potential risk of DMF ?

A

Progressive Multifocal encephalopathy. Most patients were lymphopenic, blood monitoring every 6 months is recommended ?

13
Q

A small percentage of patients receiving natalizumab experience ?

A

Hypersensitivity reactions (including anaphylaxis) and about 6% develop neutralizing antibodies (only half of which persist)

14
Q

Teriflunomide side effects ?

A

Mild hair thining, GI symptoms, rarely causes toxic epidermal necrolysis or Stevens-Johnson syndrome. possibly teratogenic (pregnancy category X)

15
Q

Mitoxantrone side effects ?

A

> 40% will experience amenorrhea, which may be permanent. Cardiotoxicity and a risk of leukemia (1.4% lifetime risk).

16
Q

The hallmark of Acute Disseminated Encephalomyelitid (ADEM) is..?

A

The presence of widely scattered foci of periventricular inflammation and demyelination that can involve both white matter and grey matter lesions typical of MS.

17
Q

Some symptoms that suggest ADEM rather than MS ?

A

Meningismus, drowsiness, coma, seizures, generally bilateral optic nerve involvement and complete transverse myelopathy.