, a puncture wound does not typically result in profuse or excessive bleeding and although painful, may look harmless as the skin around the wound simply closes. But puncture wounds carry a risk of infection and if left unattended can result in serious complications.
Injuries sustained by stepping on a nail that punctures through a shoe are especially prone to infection. If the injury is caused by stepping on a nail or a shard of glass that's been exposed to the elements, it is a good idea to consult a physician who may recommend a tetanus shot or booster.
A bite from a household pet or another person that results in a puncture wound should be considered and treated as serious injury. If the bleeding is heavy or the item that caused the wound appears unsanitary, thoroughly clean the injured area with mild anti-bacterial soap and water and seek professional medical assistance as soon as possible.
If the injury is minor, clean it with soap and water and apply an antibiotic ointment such as Neosporin to prevent infection. Dress the wound with sterile bandage and replace the dressing frequently. It is prudent to keep a close eye on the wound for several days to prevent an onset of an infection from any debris that may've lodged itself deep in the wound. If you notice persistent redness or puffiness or if the wound starts to ooze pus, have the victim consult a doctor right away.