If you’re shivering for no apparent reason, it’s a sure sign that…

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see the continuation on the next pageWhen should we worry?
Numbness that occurs for no apparent reason can be a sign of an underlying disease.

Diseases of the nervous system
Diseases such as epilepsy or multiple sclerosis can impair nerve function and cause occasional goosebumps, often in combination with other neurological symptoms.

seizures
The rare “piloheretic seizures” can cause numbness, especially if accompanied by mental confusion, loss of consciousness or sensory disturbances.

hormonal imbalance
Cancers such as pheochromocytoma can cause adrenaline spikes, resulting in spontaneous chills, changes in heart rate, or profuse sweating.

see the continuation on the next pageStress and anxiety