What Causes Severe Tingling And Itching In Both Legs And Arms?
More info needed.
Detailed Answer:
I read your question carefully and I am sorry about the symptoms that you are experiencing.
I would gladly like to guide you in identifying the cause for those abnormal sensation. However I fear some more precisions are needed to express an opinion. You mention to have stenosis, but stenosis is just the ancient greek word for narrowing, it indicates nothing about what is actually narrowed, it could be anything in any site in any organ (stenosis of blood vessels, stenosis of heart valves, stenosis of spinal canal, stenosis of nerve root exits and so on).
So you have to give some more details on the structure which was stenosed, location, tests which were done to reach to that conclusion. More data on any other medical condition you have might also be useful.
Also some more info on the distribution of these tingling feeling, do they involve the hands and feet (socks/stockings and gloves like distribution), or are they present further up the limb. Or do they involve only certain fingers or other localized areas of the limb. Any other info on how long have you had them for, exacerbating or relieving factors, other symptoms of pain, weakness, loss of balance etc might be of help.
For the moment a symmetric bilateral tingling of the extremities would generally call for an evaluation for the possibility of peripheral neuropathy the main test for which are nerve conduction studies/electromyography.
I remain at your disposal for further questions possibly providing more info.
Peripheral neuropathy likely.
Detailed Answer:
Thank you for the update, that is helpful.
I wish you could have specified where in the spine the stenosis is, usually it's lumbar or cervical (or both). However from your description of your previous issues it seems it was a case of lumbar stenosis.
Judging from that update I would confirm peripheral neuropathy as the most likely diagnosis. As I said, apart for the physical neurological exam to check for signs like loss of reflexes, muscle wasting etc, it is necessary to confirm it also with nerve conduction studies testing.
If it's confirmed, other tests would be necessary to look for the cause (the causes can be variable, at times impossible to find) such as complete blood count, blood glucose and HbA1c, liver and kidney function tests, electrolytes, thyroid function check, vitamin B12 etc.
The stenosis isn't likely to be the cause. It could explain numbness in lower limbs, but not the upper ones. Even if it was a case of a stenosis of the cervical region still that symmetrical distribution of the abnormal sensations isn't typical and should have other signs as well.
I hope to have been of help.