It's an infection. You will need to drain the pus and keep the area clean. You might consider going to the doctor to have the pus drained if it gets any worse. However, I have had this happen to me before and drained it myself. I used a sterilized needle and peroxide to promote the drainage. After draining, I applied neosporin and covered it with a bandaid.
Another thing, I've done is to press on the area until the pus started to drain. Keep pushing on it to remove the pus, apply neosporin and cover with a bandaid. It cleared up within a couple of days.I have a little bit of green underneath my skin, right next to my nail by my cuticle.?
That's probably a nail fungus or something...see a doctor....they are treatable.
If the green area is popable (meaning, does it look like ooze would come out if you poked it?) then pop it. I had the same thing, my finger was throbbing, it was clearly infected (I have the habit of pulling my cuticles too) so I stuck a pin in the 'green' area and squeezed my finger, it came out and I put neosporen on it with a bandaid and it cleared up by itself. If you do this and it continues to get worse then I would go see a doctor. It's treatable.
It is Paper epilepsy, spend some syrup inserted under no thing
Sounds like a fungal infection. You should go see a doctor.