Some studies indicate that diagnosable dissociation occurs in approximately two to three percent of the general population. Other studies have estimated a prevalence rate of 10% for all dissociative disorders in the general population (e.g., Loewenstein, 1994). Dissociation may exist in either acute or chronic forms. Immediately following severe trauma, the incidence of dissociative phenomena is remarkably high.

Research tends to show that dissociation stems from a combination of environmental and biological factors. The likelihood that a tendency to dissociate is inherited genetically is estimated to be zero (Simeon et al., 2001). Most commonly, repetitive childhood physical and/or sexual abuse and other forms of trauma are associated with the development of dissociative disorders (e.g., Putnam, 1985).

There are four main categories of dissociative disorders as defined in the standard catalogue of psychological diagnoses used by mental health professionals in North America, the Diagnostic and Statistical Manual of Mental Disorders, Fourth Edition, Text Revision (DSM-IV-TR).

The lead federal agencies working to reduce the burden of mental disorders are the National Institute for Mental Health (NIMH) and the Center for Mental Health Services (CMHS). Both organizations have extensive Web sites that provide substantial information including statistics on mental disorders, reports and fact sheets on specific mental disorders in specific populations, and consensus conference reports on the diagnosis and treatment of mental disorders.

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Arthritis is a common musculoskeletal disorder which affects more than 500 million people worldwide, including one in three Americans. Every year in the United States, musculoskeletal conditions including musculoskeletal disorders and musculoskeletal trauma accounted for more than 150 million visits to physicians' offices, including:

Amnesia refers to the inability to recall important personal information that is so extensive that it is not due to ordinary forgetfulness. Most of the amnesias typical of dissociative disorders are not of the classic fugue variety, where people travel long distances, and suddenly become alert, disoriented as to where they are and how they got there.

Dissociative effects include distorted perceptions of sight and sound as well as feelings of detachment or separation from the environment and self.

This page actually gets pretty in-depth. From the Diseases & Conditions section of the Mayo Clinic's massive online site, this page goes into: Dawn Myers talks about the possibility that some people develop eating disorders as a method of coping with the trauma of child sexual abuse.

IBS affects between 25 and 55 million people in theUnited States and results in 2.5 to 3.5 million yearly visits to physicians. Approximately 20 to 40 percent of all visits to gastroenterologists are due to IBS symptoms. IBS symptoms affects men and women of all ages and of all races. The prevalence of IBS in the general population of Western countries varies from 6 to 22%. IBS affects 14-24% of women and 5-19% of men.

In 2003, a detailed, federally supported study was published on the prevalence of autism spectrum conditions among children aged 3 to 10 years in metropolitan Atlanta. Using 1996 data, that study showed the prevalence for autism was 3.4 per 1000, with a male-female ratio of 4 to 1. The study did not show a major increase in autism compared to studies done in the 1980s and early 1990s.

Studies have shown that asthma is more common in African Americans than in Caucasians, but experts are not sure this is related to race. It could be that higher numbers of African Americans live in large urban areas, which is known to be a risk factor because of the higher levels of pollution and other asthma triggers.

In 1999–2000, an estimated 15% of children and adolescents aged 6–19 years were overweight, defined as a body mass index for age and sex at or above the 95th percentile of the CDC growth charts.

More and more women attending antenatal clinics are testing HIV-positive thereby increasing the chances of perinatal transmission. More than 1% of the antenatal mothers in the States of Maharashtra, Tamil Nadu, Andhra Pradesh, Karnataka, Nagaland and Manipur are infected with HIV.

The prevalance of preschool children stuttering is about 2.5%, that is, about 1 in 40 young children now stutter. The incidence is about 5%, or 1 in 20 children stutter at some point in childhood. About 1% of adults stutter. 0.73%, or about one in 135 adults, was the figure found in a recent study. Studies in years past claimed that some countries had higher or lower rates of stuttering, or that some cultures had no stutterers at all.

this time there is not sufficient evidence to indicate a higher risk for schizophrenia and bipolar disorder in the Jewish community. There are some studies that suggest an increase in affective disorders, including bipolar disorder, in the Jewish community. However, these studies have not been adequately substantiated at this time.

The primary advice offered my medical personnel regarding Baycol is to cease consumption of the drug immediately. If the muscle pains have not already been diagnosed, then canceling usage of the drug should eliminate possibilities of such problems arising in the future. The problems were caused as a direct result of the actions of the drug, and if the drug is no longer present then the release of muscle cells into the blood stream will no longer take place.

The essential feature of bipolar disorder is recurrent, remitting, cyclical episodes of both mania and depression throughout the course of the illness with one or more manic episodes usually accompanied by one or more major depressive episodes. Most frequently the initial episode that leads to hospitalization is manic. It is essential to understand that this disorder is characterized by different degrees of intensity of the symptoms in either the manic or the depressive stage.

The tissue lining the upper one-third of the nose contains sensory cells for our sense of smell. Scientists have found that the sense of smell is most accurate between the ages of 30 and 60 years. It begins to decline after age 60, and a large proportion of elderly persons lose their smelling ability. Women of all ages are generally more accurate than men in identifying odors. Some people are born with a poor sense of smell or taste.