However, flushing can sometimes indicate an underlying medical condition, such as rosacea, cancer, or an endocrine disorder. It is best for people to contact a doctor if flushing is worsening, occurs ...

Q. You wrote about the use of niacin against basal cell and squamous cell skin cancers. I would like to try this, but I’m having trouble with the flushing. To avoid this, I have to take the pill after ...