Sir I have a problem that 20 years ago im in 21 years. Im student, I thinking about negetively and I have stage fear problem, one day I think very very deep .why I got stage fear. In that time I got serously illness physically and mentally , some chemicals are releasing in my lower teeth line.slowly its relesing is lowly, In that time consult a pshycriatis. he told no problem.its only your feeling.but releasing of some liquid is continueing slowly tillnow. its now dead end stage .im gong mad