Cold sores, commonly caused by herpes simplex virus type 1 (HSV-1), are contagious blisters that typically appear around the lips.

HSV-2, usually linked to genital herpes, can also cause oral sores via oral-genital contact. They spread through kissing, sharing utensils,

or touching infected areas. Early symptoms include tingling or itching, followed by painful fluid-filled blisters that heal in 7–10 days.

Though there’s no cure, antiviral medications like acyclovir and valacyclovir can reduce outbreak duration, especially if taken early.

Topical creams and pain relievers may ease discomfort. The virus stays dormant but can reactivate due to stress, sun, illness,

or hormonal changes. Preventative tips include avoiding contact during outbreaks, not sharing personal items, using SPF lip balm, and

boosting immune health. Consult a doctor if sores are severe, frequent, or resistant to treatment—especially with a weakened immune system.

Meanwhile, Alzheimer’s—the UK’s leading cause of dementia—has unclear origins but is linked to aging, genetics, and heart health.

New research suggests infection may play a role. A 2019 study found that enzymes from gum disease bacteria (P. gingivalis) appeared in Alzheimer’s patients’

brains. These enzymes were linked to damaging brain proteins. Promising early treatment with COR388 in mice offers hope, but more human studies are needed.