You can have it checked out by seeing a nurse or a doctor at a clinic. If you are in a school that has a school nurse, you can ask the nurse to see if it is a wart or not on your hand. If you are between 12 and 24 years old, you can go to a youth clinic. To find a youth clinic near you in the Lower Mainland of British Columbia, see http://www.vch.ca/Documents/youth-clinics-LM.pdf  You can also go to your doctor or a walk in clinic near you.