WEAKNESS

Published by Administrator on 12-12-2011 in

Alternative names:
lack of strength; muscle weakness

Definition:
A reduction in the strength of one or more muscles.

Considerations:
Weakness is a very important symptom. The feeling of weakness may be subjective (the person feels weak but has no measurable loss of strength) or concrete (measurable loss of strength). Weakness may be generalized (total body weakness) or localized to a specific area, side of the body, limb, and so on.

A subjective feeling of weakness usually is generalized and associated with infectious diseases such as infectious mononucleosis and influenza.

Weakness is particularly important when it occurs in only one area of the body (localized or focal weakness). Localized weakness may follow a stroke, exacerbation of multiple sclerosis, or trauma to a motor nerve root or peripheral nerve.

Common causes:
Measurable weakness may result from a variety of conditions including metabolic, neurologic, primary muscular diseases, and toxic disorders.
METABOLIC

  • diabetes
  • Addison’s disease
  • thyrotoxicosis

NEUROLOGIC

  • stroke(often focal or localized weakness)
  • multiple sclerosis (may be focal)
  • amyotrophic lateral sclerosis (focal developing to generalized)
  • cerebral palsy (focal weakness associated with spasticity)
  • Guillain-Barre syndrome
  • peroneal muscular atrophy
  • Werdnig-Hoffmann disease (spinal muscular atrophy)

PRIMARY MUSCULAR DISEASES

  • muscular dystrophy (Duchenne)
  • Becker muscular dystrophy
  • myotonic dystrophy
  • dermatomyositis

TOXIC

  • organophosphate poisoning (insecticides,nerve gas)
  • paralytic shellfish poisoning
  • botulism

OTHER

  • myasthenia gravis (an autoimmune disorder that interferes with the transmission of nerve impulses to muscle)
  • poliomyelitis (an infectious disease that damages motor neurons)
  • periodic paralysis (potassium related, such as hypokalemic periodic paralysis)

0 Comments

Add new comment

Your message has been sent. Thank you!

The material on this web site is provided for educational purposes only and is not intended to replace the medical advice of your doctor or other healthcare providers. Only medical professionals who examine you can give you medical advice or diagnose your medical problem. We do not intend to create a physician-patient relationship. Your reliance on the information you get from FreeMediInfo.com is solely at your own risk. If you have a specific health question, contact your physician. Also note that while FreeMediInfo.com frequently updates its content, medical information changes rapidly. Therefore, some information may be out of date.