A striped racer, also known as the California whipsnake, is a species of non-venomous snake native to the coast and foothills of California. It is a long, slender, and fast-moving snake, identified by its distinctive stripes running down the length of its body. They primarily feed on lizards and small rodents. The scientific name for this species is Masticophis lateralis.
Schizophrenia in children and adolescents
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Schizophrenia is the presence of hallucinations and delusions causing considerable psychosocial dysfunction and lasting ≥ 6 months.
(See also Schizophrenia in adults.)
Onset of schizophrenia is typically from mid-adolescence to the mid-30s, with a peak age of onset in the 20s. Features in adolescents and young adults are similar. Schizophrenia in prepubertal children (childhood-onset schizophrenia), in which symptoms similar to those of the adolescent/young adult-onset form develop before age 12, is extremely rare.
Although the first episode usually occurs in young adults, some contributory neurodevelopmental events and experiences occur earlier (eg, during the perinatal period).
These perinatal risk factors include the following:Genetic disorders (particularly those that increase risk of childhood onset)
Exposure to certain drugs or substances (eg, cannabis) during a vulnerable period
Prenatal undernutrition
Labor complications, hypoxia, perinatal infection, placental abruption or insufficiency
Childhood brain injuryOther risk factors, which occur later (eg, drug use later in adolescence), may then trigger the onset of schizophrenia.
Manifestations of childhood-onset schizophrenia are usually similar to those in adolescents and adults, but delusions and visual hallucinations (which may be more common among children) may be less elaborate. Additional characteristics also help distinguish childhood-onset schizophrenia from the adolescent/young adult form:More severe symptoms
A strong family history
Increased prevalence of genetic abnormalities, developmental abnormalities (eg, pervasive developmental disorder, intellectual disability), and motor abnormalities
Increased prevalence of premorbid social difficulties
Insidious onset
Cognitive deterioration
Neuroanatomic changes (progressive loss of cortical gray matter volume, increase in ventricular volume)Sudden-onset psychosis in young children should always be treated as a medical emergency with a thorough medical assessment to search for a physiologic cause of the mental status change; these causes include
Drugs (in younger children, stimulants and corticosteroids; in adolescents, drugs of abuse)
CNS infection or injury
Thyroid disorders
Autoimmune encephalopathies (eg, anti-NMDA [N-methyl-d -aspartate] receptor encephalitis [1])
SLE (2)
Porphyria (3)
Wilson disease (4)Recent research indicates that there is an increased risk of developing certain psychotic disorders (namely, bipolar disorder and schizophrenia) among adolescents who use cannabis products containing tetrahydrocannabinol (THC). This increased risk is not explained by genetic factors. There is concern that the recent legalization of marijuana may give adolescents (and their parents) a false sense of security about the safety of this common recreational drug.
Treatment of schizophrenia in children and adolescents is complex, with variable outcomes, and referral to a child and adolescent psychiatrist is strongly recommended.
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