Without knowing anything else, it would be unlikely to find out that you have poor touch-typing posture (e.g., you break the wrist upwards/type with the wrist in extension), or that you have very weak forearms and wrists, and possibly slouch a lot in the shoulders. Not touch typing likely reduces the impact of these liabilities, assuming you have them, by putting breaks into the mechanical demands of typing.

You also might just have an absolutely terrible keyboard. Some people pound on keys when they don't need to. There are a lot of reasons typing can cause finger, wrist, and forearm pain.