If you pinch up a fold of skin and it remains elevated, that means the person is dehydrated and needs immediate fluids because the skin has lost so much fluid that it is no longer elastic.
One of the symptoms of dehydration is that the skin of a casualty remains elevated when pinched (decreased) skin tugor.
Which Heat emergency you should suspect if the skin of the casualty remains elevated when pinched
Which Heat emergency you should suspect if the skin of the casualty remains elevated when pinched
Which Heat emergency you should suspect if the skin of the casualty remains elevated when pinched
Which Heat emergency you should suspect if the skin of the casualty remains elevated when pinched
Which Heat emergency you should suspect if the skin of the casualty remains elevated when pinched
DEHYDRATION
Dehydration
Dehydration
Most likely the questioner means TENTED skin. This is one indicator of severe dehydration which is beyond the scope of FIRST aid.
Skin that is continuously pinched can lose blood circulation. This can cause death of the tissues to occur in some cases.
If you pinch the nerve then you will have a reaction worse then what you would feel when you get a regular pinch. The nerve is the symptom that causes the pain when you get pinched , so if you get pinched on your nerve exactly then you would have very painful reaction that could maybe cause the place that got pinched to be numb for a few weeks. But to actually pinch the nerve you would have to open the last layer of skin. It would be nearly impossible to pinch the nerve so in that case pinching the nerve would hurt if you had surgery that cut through all of the layers of skin, and a doctor accidentally pinched it, but you can't pinch the nerve without all of the layers of skin open.