Neuropathy: Goosebumps are caused by stimulation of the autonomic system - which innervate the small muscles attached to each hair. Anything that causes an adrenaline rush or other activation of your sympathetic nerves (such as fear, or cold) will cause goose bumps (also known as "pilo erection"). It's also possible this is caused by a condition called autonomic hyperreflexia. Talk with your neurologist.
Answered 5/26/2021
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