Explain the scientific Reason My arm hurts?

Question

I had a shot in my upper arm yesterday. Today it hurts..WHY?

Answer 1

Actually it has very little to do with the needle. The reason your arm hurts is that you are having a localized reaction to the shot you recieved.

Your immune system is "attacking" the area and creating antibodies to what ever medicine or vaccine was introduced into your system. Because the shot was into a muscle it is extra sore (more than if the shot had been given in a fatty area). Every time you move your arm the muscle has to contract against the extra pressure created by the swelling which was caused by the immune reaction.

To help reduce the pain - try warm packing the area and try to use your arm normally - or even a bit more than usual. This will help spread the extra fluid around and the soreness will go away quicker.

Next time you get a shot in the arm - really work that muscle by massaging the muscle and raising your arm up and down right after you get the shot to help disperse the medicine throughout the muscle - it will help keep the immune reaction from being so localized and will make it less sore in the long run!

Hope you feel better soon!

Answer 2

Well obviously almost dying and then turning out alive is going to change somebody's perspective on life. Nobody can know for sure what it was like for them but if they were religious to start out with then it's no surprise they're thanking god. This is why people who have gone through that same situation have claimed to have seen Jesus whereas some have claimed to see Allah and some claim nothing happened. And since I'm assuming your religious by your question it's probably safe to say that at least a fair amount of your friends are religious as well, so it's also no surprise they thought it was spiritual. The fact that people have had these experiences doesn't prove anything except that they got lucky. If these were somehow miracles then how do you explain the thousands of other deaths in hospitals every day? Just because a small handful of people didn't die doesn't mean they were being protected. It's also been proven that if you convince yourself to believe something that your brain can actually change the way your body functions to fit that belief. People may very well have hallucinated and seen Jesus when they were dying. This is because they have completely convinced themselves that's who's there when you die. Otherwise other people wouldn't have seen Allah or whatever other god they worship. Oh and to answer the main question, yes, I'm sure science can explain these incidents with their studies of how the brain works and how it effects the body. Like I said, it's been proven that your strong beliefs change the way you function to an extent.

Answer 3

Someone mentioned massaging the muscle after the injection... don't!

This can cause the drug to infiltrate surrounding subcutaneous tissue causing more irritation and bruising.

Just elevate the arm if possible, and apply pressure on it until the bleeding resolves.

The injection was given intramuscular I presume, so the drug is not meant to be dispersed to the other tissues.

Answer 4

probably the needle penetrated an area where nerve endings locate causing inflammation of the area of puncture.

Answer 5

becuase you had a sharp object called a needle go into your muscles... and it causes it to swell your muscle and then from that you get....( A SORE ARM ) for a few days........

Answer 6

the needle bruised your muscle.. bruises hurt dont they? that is why.. there is no scientific reason.