What gets measured (correctly) gets managed and improved.
I began counting the number of lesions (pimples) that I had (about once a week). This sounds nutty but it has enabled me to better gauge whether or not treatments were working over time.
I counted lesions that were on my upper neck and face. I did not count chest or back acne.
Excel sheets are great for this. Evernote also works well, and can be accessed from any device with the internet.
We will work on better ways to quantify acne, as there are many factors like sebum, inflammation, redness, etc.