A wart can be a kind of small and rough growth on your hands or feet sometimes also in other locations of your body. Warts can have the look of a small cauliflower or look like a harden blister.
The cause is a viral infection like the human papillomavirus. There are 10 different varieties of warts, the most common ones are to be considered mostly harmless.
Warts are contagious and dry skin broken skin is the door for them to enter the body. Usually they disappear after a few months but it could take years to get rid of them.