Medical Glossary Decoded

Habitual abortion is defined as three or more pregnancy losses in continuation before 20 weeks of gestation. The condition may result from chronic infection, severe kidney problems, severe foetal abnormality, endocrine disorders, and structural defects of the cervix or uterus or immune problems.
Hallucinations are sensations that appear to be real but are created within the mind. Examples include seeing things that are not there, hearing voices or other sounds, experiencing body sensations like crawling feelings on the skin, or smelling odours that are not there.
Handedness, or hand preference, is the tendency to be more skilled and comfortable using one hand instead of the other for tasks such as writing, playing, eating, etc.
There are two types of cells in the body - haploid cells and diploid cells. They differ on the basis of number of chromosomes their cell contains. Haploid cells have half the number of chromosomes (n) as diploid - i.e. a haploid cell contains only one complete set of chromosomes. Example is sperm and ova.
A hematoma is an abnormal and localized collection of blood outside the blood vessels. It occurs because the wall of a artery, vein, or capillary, has been damaged and blood has leaked into tissues which may cause symptoms of inflammation including pain, swelling and redness.
Hemorrhage is also known as bleeding. It is the abnormal flow of blood. Bleeding can occur internally, where blood leaks from blood vessels inside the body, or externally, either through a natural opening such as the mouth, nose, ear, urethra, vagina or anus, or through a break in the skin.
An injectable anticoagulant (anti-clotting) medication used to prevent and treat blood clots in the veins, arteries, or lungs.
A hiccup is an extraordinary type of respiratory movement involving a sudden inspiration (intake of air) due to an involuntary contraction of the diaphragm accompanied by closure of the glottis (the vocal apparatus of the larynx).
As per the new guidelines, hypertension is defined as blood pressure above 140/90 mm Hg.