Much of the increase will be in developing countries. Already 58% of people with dementia live in low and middle income countries, but by 2050 this will rise to 68%. The fastest growth in the elderly population is taking place in China, India, and their south Asian and western Pacific neighbours.
If acyclovir is your drug of choice ( famvir is a 1 time dose, valtrex is a 2x/day for 1 day dose ), try 800mg 3x/day for 2 days. it works best if started at the very first tingle /sign of a potential cold sore.
If you use an antiviral cream as soon as symptoms start then the cold sore may not last as long as usual and may be less severe. There is debate as to how well the cream works. Aciclovir has to be applied five times per day for five days.