Hi,
It could be due to any allergic reactions, injuries or any insect bites most commonly. Do u experience any other associated complaints along with it like pain,itching or numbness? Please observe any particular food items or things which causes it..
Please consult a physician or homeopath next time when you suffer from it.
Regards
Answered2016-02-08 08:37:49
2/2 people found this helpful