this could be from holding your pen wrong
aids
Of course you need to
lots of use of fingers causes Red lumps.Check with a professional
These bumps show you where your "Home Keys" are by touch. If you type in the correct way, your pointer fingers should rest over the "F" and the "J". These bumps allow you to find these keys by touch so you do not have to glance down at the keyboard to know where your fingers are. There are many products to enhance or act as visual aids. Example. www.keyboardbumps.com
Blisters.
The testicles are gently rolled and massaged between the fingers and thumb to feel for bumps, swelling, tenderness, or irregularities.
take small section of hair and push your fingers up the hair shaft if you feel bumps your hair is poroise
touch typing using the bumps on the F and J keys to tell where to put your index fingers.
Scabies
Small bumps on the sides of the fingers and toes the get itchy and occur in winter and spring are likely to be exzema. This type of eczema is sometimes called dyshydriosis. See your health care provider for accurate diagnosis and effective treatment.
On most keyboards, there are bumps built into the keys so that you can feel it. On others, you might have to feel up the rows of keys and over to the edge on left and right to make sure your fingers are on the right keys.
If your bumps are itchy it could be scabies....thats usually where they start....then it spreads to other areas known as hot spots such as behind the knees, wrists, where your arm bends...etc. It is usually worse at night when you are sleeping if it is itching....if it continues you need to see your doctor