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Medical Dictionary Definitions A-Z List

Medical Dictionary Definitions A - Z - «I»:

  1. Infantile autism Infantile autism
    Infantile autism: (Also called autism.) A spectrum of neuropsychiatric disorders characterized by deficits in social interaction and communication, and unusual and repetitive behavior. Some, but not all, people with autism are non-verbal. Autism is normally diagnosed before age six and may be diag...
  2. Infantile beriberi Infantile beriberi
    Infantile beriberi: Disease in infants due to deficiency of thiamine. This disease is well-known in undeveloped countries among malnourished infants but it is very rare in developed countries. It can occur if a breastfeeding mother has an inadequate intake of thiamine. The disease can also occur i...
  3. Infantile genetic agranulocytosis Infantile genetic agranulocytosis
    Infantile genetic agranulocytosis: Children born with this condition lack neutrophils (a type of white blood cell that is important in fighting infection). These children suffer frequent infections from bacteria which in the past led to death in three- quarters of cases before 3 years of age. Th...
  4. Infantile hypothyroidism Infantile hypothyroidism
    Infantile hypothyroidism: Hypothyroidism (subnormal activity of the thyroid gland) that starts after birth and is manifest by features including delays in growth and development and myxedema surfacing during infancy. Myxedema is a dry waxy type of swelling, often with swollen lips and nose....
  5. Infantile myxedema Infantile myxedema
    Infantile myxedema: Hypothyroidism (subnormal activity of the thyroid gland) that starts after birth and is manifest by features including delays in growth and development and myxedema surfacing during infancy. Myxedema is a dry waxy type of swelling, often with swollen lips and nose. Infan...
  6. Infantile paralysis (polio) Infantile paralysis (polio)
    Infantile paralysis (polio): Infantile paralysis is an old synonym for poliomyelitis, an acute and sometimes devastating viral disease. Man is the only natural host for poliovirus. The virus enters the mouth and multiplies in lymphoid tissues in the pharynx and intestine. Small numbers of virus...
  7. Infantile spasms Infantile spasms
    Infantile spasms: A seizure disorder of infancy and early childhood with the onset predominantly in the first year of life of myoclonic seizures, hypsarrhythmia (abnormal, chaotic electroencephalogram), and mental retardation. The spasms are sudden, brief contractions of one or more muscle groups, a...
  8. Infantile systemic hyalinosis Infantile systemic hyalinosis
    Infantile systemic hyalinosis: A genetic disorder characterized at birth or soon afterwards by painful swollen joint contractures and red pigmentation over bony prominences. Pearly papules (little bumps) and fleshy nodules then develop in the skin. Overgrowth of the gums and thickened skin are also ...
  9. Infantile thiamine deficiency Infantile thiamine deficiency
    Infantile thiamine deficiency: See: Infantile beriberi....
  10. Infantile vitamin B1 deficiency Infantile vitamin B1 deficiency
    Infantile vitamin B1 deficiency: See: Infantile beriberi....
  11. Infantilism, Brissaud's Infantilism, Brissaud's
    Infantilism, Brissaud's: An eponym that is little used (in the USA) for hypothyroidism (subnormal activity of the thyroid gland) that starts after birth and is manifest by features including delays in growth and development and myxedema surfacing during infancy. Myxedema is a dry waxy type of...
  12. Infarct Infarct
    Infarct: An area of tissue death due to a local lack of oxygen. For example, in a myocardial infarction there is death of myocardial (heart muscle) tissue due to sudden (acute) deprivation of circulating blood. This is usually caused by arteriosclerosis with narrowing of the coronary arterie...
  13. Infarction Infarction
    Infarction: The formation of an infarct, an area of tissue death due to a local lack of oxygen. For example, in a myocardial infarction there is death of myocardial (heart muscle) tissue due to sudden (acute) deprivation of circulating blood. This is usually caused by arteriosclerosis with narro...
  14. Infarction, acute myocardial Infarction, acute myocardial
    Infarction, acute myocardial: See: Acute myocardial infarction....
  15. Infection Infection
    Infection: The growth of a parasitic organism within the body. (A parasitic organism is one that lives on or in another organism and draws its nourishment therefrom.) A person with an infection has another organism (a "germ") growing within him, drawing its nourishment from the person. The term "in...