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A chronic condition (also known as chronic disease or chronic illness) is a health condition or disease that is persistent or otherwise long-lasting in its effects or a disease that comes with time. The term chronic is often applied when the course of the disease lasts for more than three months.
In medicine, describing a disease as acute denotes that it is of recent onset; it occasionally denotes a short duration.The quantification of how much time constitutes "short" and "recent" varies by disease and by context, but the core denotation of "acute" is always qualitatively in contrast with "chronic", which denotes long-lasting disease (for example, in acute leukaemia and chronic ...
The course of a disease, also called its natural history, [3] is the development of the disease in a patient, including the sequence and speed of the stages and forms they take. [4] Typical courses of diseases include: chronic; recurrent or relapsing; subacute: somewhere between an acute and a chronic course
YLD is determined by the number of years disabled weighted by level of disability caused by a disability or disease using the formula: YLD = I × DW × L. In this formula, I = number of incident cases in the population, DW = disability weight of specific condition, and L = average duration of the case until remission or death (years).
Progressive disease or progressive illness is a disease or physical ailment whose course in most cases is the worsening, growth, or spread of the disease. This may happen until death , serious debility , or organ failure occurs. [ 1 ]
A refractory disease is a disease that resists treatment, especially an individual case that resists treatment more than is normal for the specific disease in question. Subclinical disease Also called silent disease, silent stage, or asymptomatic disease. This is a stage in some diseases before the symptoms are first noted. [23] Terminal phase
Chronic care refers to medical care which addresses pre-existing or long-term illness, as opposed to acute care which is concerned with short term or severe illness of brief duration. Chronic medical conditions include asthma, diabetes, emphysema, chronic bronchitis, congestive heart disease, cirrhosis of the liver, hypertension and depression.
A related term is the duration of shedding or the shedding period, which is defined as the time duration during which a host or patient excretes pathogens through saliva, urine, feces or other bodily fluids. [6] However, for some infectious diseases, the symptoms of the clinical disease may appear after the host becomes infectious.