Big : Big toe numbness can be caused by compression of a nerve or nerves in the lower limbs, which may occur during sleep in unusual positions. There are a few instances in which persistent toe numbness could be the sign of a larger problem, but this is not highly likely. A visit to a primary care doctor (internal medicine, family practice or urgent care) for an examination and individual attention can get to the bottom of the problem. There is a far more serious problem: it is not normal for a driver of a vehicle to fall asleep while waiting for a light to change. This abnormal degree of sleepiness could be caused a number of things, including the effects of medical or recreational drugs (such as pain medication, allergy medication, anxiety medication, alcohol), not getting enough sleep (such as shift work, sleep apnea), or a problem called narcolepsy. Regardless of the cause, falling asleep while waiting for a light to change is an indication of circumstances in which the person should absolutely not be driving. Drowsy driving and falling asleep at the wheel can severely injure or kill the driver or, even worse, passengers, other drivers, or innocent bystanders (such as a school bus full of kids). It is very important to get evaluated for the cause of drowsy driving and to refrain from driving until the problem is fixed.
Answered 10/3/2016
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