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57 Topic Pages Found in Health & Medicine and starting with the letter H
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Haeckel, Ernst, 1834-1919

Place: Germany Subject : biography, biology German zoologist well known for his genealogical trees of living organisms and for his early support of

Hall, Marshall, 1790-1857

English physician and physiologist who distinguished between voluntary and involuntary reflex muscle contractions, proving that the spinal cord is

Open Hallucinogenic drugs
Hallucinogenic drugs

Hallucinogens are substances known to cause changes in awareness, thought processes, and feelings, thereby altering perception of reality. For

Open Hantaviruses

any of a genus (Hantavirus) of single-stranded RNA viruses that are carried by rodents and transmitted to humans when they inhale vapors from

Open Harvey, William, 1578-1657
Harvey, William, 1578-1657

Place : France Subject : biography, biology English physician who discovered that blood is circulated around the body by pulsations of the heart, a

Hay Fever

seasonal allergy causing inflammation of the mucous membranes of the nose and eyes. It is characterized by itching about the eyes and nose, sneezing,

Head injury

The skull is a strong container that protects and carefully cushions the valuable contents inside. Head injuries are potentially serious, but few lead

Open Health

Term to define state of well-being or absence of illness. Health may be used by people to mean different things, and could be said to mean the

Open Health care
Health care

Health care refers to services provided by medical professionals aimed at promoting physical and mental welfare, through the prevention, treatment,

Health care delivery

Health care delivery encompasses a complex system in which local, state, national, and international communities provide services that enable people