After day of heavy typing, my left pinky feels weird. My strength, reaction time, and sensation are normal. It feels vague and stiff. Why? Help :- (

Overuse injuries. Hi Dorothy, Usually with physical activities such as typing it is possible to suffer overuse injuries to our digits. It is a good sign if you do not have significant pain in your pinky. Repetitive stress or overuse injuries can include tendon strain and tendonitis, which are likely with your clinical picture. Try to rest your affected pinky by using other fingers to do its typing jobs.