My right index finger is swollen with no blood/puss. slight green tint next to nail and throbbing pain. no puncture wound. recurring: 4 infection 2yrs?

URGENT-GO TO THE ER!: Urgent! you have an infection that needs urgent surgical attention, and antibiotics. Do not delay, go straight away.

Ouch: Sounds a lot like a paronychia. This is constantly irritated by n in grown nail and sometimes this offending part of the nail will need to be removed for this to clear up.

Possible Infection: There are various types of infections. Infections can be due to a fungus, bacterial or due to a virus. The treatment will depend on the type of infection and on what exactly is infected. Have it evaluated by a professional to get the appropriate treatment. By leaving it alone it may get worse.