Any surgical incision into the skull, esp to expose the brain for neurosurgery.
it is located at the end of the essay which is it at the very bottom of the page
there are a few rare cases of heartworm in humans, where it is usually found as a single worm in the lung versus heart.
there are rare cases since humans are not a natural host for heartworm, it is usually in animals but cannot be spread from animal to animal.
symptoms are trouble breathing, coughing, vomiting, weight loss, fatigue etc.
If you think you have heart worm from a pet, it is unlikely but if you match the symptoms you should see a doctor.
Your primary concern should be their safety. :)