Also found in: Dictionary, Thesaurus, Acronyms, Encyclopedia, Wikipedia.


A beginning; a start, as of a cold.


Public health Any unanticipated event that requires urgent response, bringing people and/or property out of harm's way in order to minimize loss of life or destruction of property; disasters are described by certain parameters Vox populi A cataclysmic event in which there is a loss of multiple lives and/or major property damage. See Climatologic disaster, Geological disaster, Man-made disaster, Natural disaster, Tsunami.
Disaster classifications
Nature, ie either
1. Natural, geophysical–eg earthquakes, volcanoes or weather-related–eg floods, hurricanes.
2. Man-made–transportation-related, structural collapse, war, hazardous materials, explosions, fires
Location Single site–eg explosion or multiple sites–eg hurricanes
Predictability Regular–eg hurricane season or sporadic–eg toxic spill
Onset Gradual–eg armed conflict or abrupt–eg accident
Duration Brief–eg natural disaster or extended–eg armed conflict
Frequency Often–eg flood, or rare–eg fire

Patient discussion about onset

Q. Once I read in this iMedix group that stress is one of the suspect causes for the onset fibromyalgia. Once I read in this iMedix group that stress is one of the suspect causes for the onset fibromyalgia which is not proven. So can we take that both are separate? If not what is the relationship between stress and fibromyalgia?

A. Oh don’t you know the answer to this question? Are you sure? No one really knows the answer to this question?. It is believed that in some cases the onset of fibromyalgia may have followed a particularly stressful event or episode in a person's life. This stress may have been psychological in nature or may have been the type of stress experienced when trauma results from a serious injury or accident. Stress, however, also plays a role in triggering certain fibromyalgia symptoms or worsening the degree to which they are felt. The physical stress brought about by strenuous exertion, for example, can result in a "bad day" for an FMS sufferer. And certain odors or loud sounds or bright lights have been known to bring about the headaches that are often associated with fibromyalgia as well.

Q. how do you know if you have early onset of alzheimers? i'm 47. i do have extreme tremors at times and memory l i was told this could be what i have by a psychiatrist. What else can cause me to have these symptoms at my age and how do i know?

A. any time ;)

Q. I am 48 and I find myself sometimes experiencing problems coming up with names of people and places. Here's another common question that people ask me. I am 48 and I find myself sometimes experiencing problems coming up with names of people and places. Is this a sign of a memory disorder?

A. This is a concern that many people share and the answer is NO. This is a typical experience in midlife years and beyond. It does not interfere with the ability to function well and have a good and happy life. We need to accept it as we accept other signs of healthy aging and find ways to work around it.

More discussions about onset
References in periodicals archive ?
Our results stand in contrast to the study by Alli et al., which showed no significant association between eye involvement and age at onset in Ankara, Turkey (12) and to the study by Whallett et al.
The exposure of interest was age of AD onset, and they divided patients into three broad age categories: early onset (age 2 years or younger), mid onset (3-7 years), and late onset (8-17 years).
Logistic regression analysis was used to obtain odds ratios (OR) and their 95% confidence intervals (CI) for macrovascular complications in the early and late onset T2DM groups, respectively.
Anhui white goat included in the study including four puberty onset female lambs and four pre-puberty counterparts.
This study demonstrated that the early onset and late alcohol dependent patients were significantly different in their age of onset of drinking, age of development of dependence, family history of alcohol dependence, and severity of dependence.
Age at onset among the different groups of various factors at diagnosis of type 2 diabetes mellitus
The age of onset among the 315 individuals in the early-onset group ranged from 7 to 18 years of age; their mean age of onset was 16.4 (2.1) years of age.
In this study, we showed that early and late onset AS patients can present with different clinical, laboratory, and genetic features.
In the studies about age at menarche, it has been found that when schizophrenic and non-schizophrenic patients were asked their age at menarche, the answers given by them and by their mothers were coherent and it was concluded that questioning only the age at menarche would be reliable and adequate in reflecting the onset of puberty and estrogen secretion (28,32,33).
Child loss significantly predicted the age of onset of psychosis (age of onset was 36.4 and 27.2 years for those experiencing and not experiencing child loss).
Findings from this cross-sectional survey that suggest the trauma of losing a child could be an etiologic factor in the onset of psychosis are a significantly later age of onset of psychosis in those experiencing the loss, onset within a year of the trauma in many subjects, and the specificity of the association with psychosis compared with the association for other psychiatric conditions, Jordan E.
Late onset offending and substance use; findings from the NYSFS.