mysthenia Gravis

MYSTHENIA GRAVIS

a rare chronic autoimmune disease marked by muscular weakness without atrophy, and caused by a defect in the action of acetylcholine at neuromuscular junctions.

SIGN AND SYMPTOM

Eye muscles

• Drooping of one or both eyelids (ptosis).
• Double vision (diplopia), which may be horizontal or vertical, and improves or resolves when one eye is closed.

Face and throat muscles 

• Altered speaking. Your speech may sound very soft or nasal, depending upon which muscles have been affected.
• Difficulty swallowing. You may choke very easily, which makes it difficult to eat, drink or take pills. In some cases, liquids you're trying to swallow may come out your nose.
• Problems chewing. The muscles used for chewing may wear out halfway through a meal, particularly if you've been eating something hard to chew, such as steak.
• Limited facial expressions. Your family members may comment that you've "lost your smile" if the muscles that control your facial expressions have been affected 

Neck and limb muscles

-weakness in your neck, arms and legs