Only the body louse is known to spread disease. Lice infestations (pediculosis and pthiriasis) are spread most commonly by close person-to-person contact. Dogs, cats, and other pets do not play a role in the transmission of human lice. Lice move by crawling; they cannot hop or fly.
Physical therapists also work with children who have major injuries or health conditions, such as cerebral palsy. They address the usual issues of range of motion, strength, endurance, and mobility. Also, the therapist considers the child's special growth and developmental needs.
The work of physical therapists varies by type of patient. For example, a patient experiencing loss of mobility due to stroke needs different care from that given to an athlete recovering from an injury. Some physical therapists specialize in one type of care, such as orthopedics or geriatrics. Many physical therapists also work at preventing loss of mobility by developing fitness and wellness programs to encourage healthier and more active lifestyles.