imbalance in ying and yang energy. Too much stress? A "friend" with lots of drama.
If you were to introduce yourself as a person and describe a bit about yourself. How would you describe your life? is it fore filled? uneven. Anything lacking? too much of something?.
ying and yang... whos this faggot? No, just a bad immune system, get some vits.
Drink a lot of lemon juice
Take vitamins supplements
Your immune system must be synergised