The Killer Whale or ORCA as they are commonly called, inhabits all of the Worldâs oceans, preferring the coastal waters near shore in the cooler regions of the planet. Male Killer Whales are larger then the female of the species and can be distinguished easily by the shape of the whales dorsal fin. The dorsal fin of the male Killer Whale is significantly larger and is shaped more triangular then the femaleâs.
When treating head lice, supplemental measures can be combined with recommended medicine (pharmacologic treatment); however, such additional (non-pharmacologic) measures generally are not required to eliminate a head lice infestation.
Head-to-head contact with an already infested person is the most common way to get head lice. Head-to-head contact is common during play at school, at home, and elsewhere (sports activities, playground, slumber parties, camp). Although uncommon, head lice can be spread by sharing clothing or belongings. Itching, caused by an allergic reaction to the bites of the head louse. 2  Irritability and difficulty sleeping; head lice are most active in the dark. 3  Sores on the head caused by scratching. 4  These sores can sometimes become infected with bacteria found on the person's skin.