Itchy Feeling all over my body.

Hey, When i'm running after about a mile, I get this itchy feeling all over my body, it get so bad i can't run anymore. I don't understand what it is, I ask around people say that it happens to them but only for a second when they are about to start sweating. My Brother saids, that it my blood capallaries are expending cause im not getting enough oxygen, but he has no medical background. Can anyone help? Give me a sense of direction, Tell me how to stop this? Thank You.

[Dr Vinod]

Hello!

Try to take some antihistamines and if it is due to allergy it will subside.

If the feeling continues with physical exercise then you have to follow up with a neurologist to find out the reason for irritation of the nerve endings or release of histamines with physical exercise.

Take care!

[GregoryJ]

Thanks doc what are antihistamines? Is it a over the counter drug?