It can be a primary disorder caused by a biochemical or neurological disruption of a person's ability to sleep.
Congenitally small testes may be a primary disorder or may occur because of underactivity of the pituitary.
Chronic cor pulmonale may be caused by a form of pulmonary disease such as chronic bronchitis or emphysema in which lung tissue is destroyed and replaced with air spaces, causing a loss of pulmonary blood vessels, or it may be caused by multiple blood clots in the vessels of the lung or by a primary disorder of the pulmonary blood vessels.
Otherwise, the primary disorder is diagnosed.
Women with the primary disorder of sphincter relaxation find voiding difficult.
Some have argued, however, that the severity of the primary disorder results in inflated estimates of personality disorder.
In most cases headache is a primary disorder, including migraine and tension-type headache (TTH) as the more frequent conditions that affect women asking medical consultation.
Children selected were aged 7 to 14, with signs of ADHD as primary disorder and no signs of neurodevelopmental delay (intellectual disability [IQ below 79], epilepsy, genetic syndromes, HIV, hydrocephalus, brain damage, etc)., and not currently taking other medications.
The small proportion of patients with TBI in the present study is explained by the fact that, in TBI patients, the SE is usually a secondary complication of the primary disorder.
Impaired lysosomal degradation of a specific lipid defines a primary disorder of lipid metabolism and as these lysosomal storage disorders additionally show secondary lipid alterations, all primary disorders can also be considered secondary disorders of lipid metabolism.
Substance-induced mental disorders are diagnosed according to DSM 5 when the characteristic symptoms of the disorder appear during or up to 1 month after the consumption of a substance, if there is no data to justify a primary disorder (i.e., symptoms preceding the use of the substance) (American Psychiatric Association 2013).
