Do you experience negative personality changes? Do you have frequent bouts of gout?What about skin flushing or itching, dry skin, or skin rashes? If you answeredyes, you may be suffering from Vit B3 deficiency or toxcity?
Are you extremely sensitive to light? Do you experience frequent dizziness? How about excess itching or numbness? If you answered yes to any of these questions you could have either a Vit B2 deficiency of toxicity.