Photoshop: What to do if your brush diameter disappears

Occasionally I will be deep into photo editing and all the sudden my brush diameter will disappear. Years ago I would have to reset photoshop when this happened not knowing that the problem was caused by turning on the CAPS LOCK key. So thats it next time your brush diameter doesn’t work just make sure that your CAPS LOCK key isn’t on. I decided to make this post because I encountered the minor problem again last night and it made me wonder how many people run into the same problem and don’t know how to fix it.