3 doctors weighed in:

Why have I developed a nervous twitch?

3 doctors weighed in
Dr. Edward Smith
Neurology
2 doctors agree

In brief: Adrenaline

Anxiety causes release of, or is associated with, elevated levels of stimulatory hormones such as Epinephrine and nor-epinephrine.
These chemical messengers make contraction of muscle fibers quite more likely; especially those which already may be primed to do so for other reasons, such as high usage rates or pre-existing spasm.

In brief: Adrenaline

Anxiety causes release of, or is associated with, elevated levels of stimulatory hormones such as Epinephrine and nor-epinephrine.
These chemical messengers make contraction of muscle fibers quite more likely; especially those which already may be primed to do so for other reasons, such as high usage rates or pre-existing spasm.
Dr. Edward Smith
Dr. Edward Smith
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