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Muscle weakness

Muscle weakness or myasthenia (my- from Greek μυο meaning "muscle" + -asthenia ἀσθένεια meaning "weakness") is a lack of muscle strength. The causes are many and can be divided into conditions that have either true or perceived muscle weakness. True muscle weakness is a primary symptom of a variety of skeletal muscle diseases, including muscular dystrophy and inflammatory myopathy. It occurs in neuromuscular junction disorders, such as myasthenia gravis. Muscle weakness can also be caused by low levels of potassium and other electrolytes within muscle cells.

Source: Wikipedia

What causes it?

The most common causes of muscle weakness are muscular dystrophy, multiple sclerosis, and epilepsy. Other possible causes, such as chronic back pain, are more rare.

What symptoms are related?

Within all the people who go to their doctor with muscle weakness, 32% report having problems with movement, 32% report having loss of sensation, and 32% report having fatigue.


What might my doctor prescribe?

Common Tests and Procedures

Patients with muscle weakness often receive hematologic tests, other diagnostic procedures (interview; evaluation; consultation), physical therapy exercises, lipid panel, magnetic resonance imaging, hemoglobin a1c measurement, occupational therapy assessment and physical therapy exercises; manipulation; and other procedures .

Common Medications

The most commonly prescribed drugs for patients with muscle weakness include baclofen, pregabalin (lyrica), glatiramer (copaxone), amantadine, rosiglitazone (avandia), glimepiride, lanolin-mineral oil topical, riluzole, dapiprazole ophthalmic, acetaminophen / phenyltoloxamine / salicylamide, ferrous sulfate, estrogens, conjugated (usp) / methyltestosterone and cinacalcet (sensipar) .

Baclofen
$18
(28 days)
Pregabalin (Lyrica)
$148
(28 days)
Glatiramer (Copaxone)
$2857
(28 days)
Amantadine
$28
(28 days)
Rosiglitazone (Avandia)
$157
(28 days)
Glimepiride
$8
(28 days)
Lanolin-Mineral Oil Topical

Riluzole
$890
(28 days)
Dapiprazole Ophthalmic

Ferrous Sulfate
$3
(28 days)
Cinacalcet (Sensipar)
$598
(28 days)

Who is at risk?

Groups of people at highest risk for muscle weakness include . On the other hand, age < 1 years almost never get muscle weakness.

Age

< 1 years
0.0x
1-4 years
1.0x
5-14 years
1.5x
15-29 years
0.4x
30-44 years
1.0x
45-59 years
1.1x
60-74 years
1.4x
75+ years
1.4x

Sex

Male
1.2x
Female
0.8x

Race/Ethnicity

Black
0.5x
Hispanic
0.8x
White
1.3x
Other
0.3x
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