Cold sores, often caused by HSV-1, are contagious blisters that appear after tingling symptoms and heal in about a week, with outbreaks triggered by stress, illness, or sun; while incurable, antivirals can help manage them. Research also suggests gum disease bacteria (Porphyromonas gingivalis) may be linked to Alzheimer’s, with early studies showing potential for new treatments like COR388.
