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.
However, it is not a cure for these infections. The viruses that cause these infections continue to live in the body even between outbreaks. Acyclovir decreases the severity and length of these outbreaks. It helps the sores heal faster, keeps new sores from forming, and decreases pain/ itching.