Catatonic schizophrenia is a subtype of schizophrenia characterized by disturbances in movement, which may include a dramatic increase in activity, a dramatic decrease in activity or repetitive movements, according to Ps... More » Health Conditions & Diseases Mental Health

As of 2014, the underlying causes of schizophrenia are not known with any certainty, according to Mayo Clinic. The disorder tends to run in families, though some cases occur without a family history of the condition, lea... More » Health Conditions & Diseases Mental Health

The symptoms of schizophrenia vary from person to person and in the same person over time, and they do not always include visual hallucinations, Mental Health America says. The most common type of hallucination in schizo... More »

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Paranoid schizophrenia is a form of schizophrenia that causes individuals to experience delusions that other people are conspiring against them or persecuting them, explains PsychCentral. Paranoid schizophrenia patients ... More » Health Conditions & Diseases Mental Health

People experiencing a manic episode, commonly associated with mental disorders such as bipolar disease, exhibit an inflated sense of grandiosity, a decreased need for sleep and excessive involvement in activities that ar... More » Health Conditions & Diseases Mental Health

No single test can diagnose early onset dementia, but a combination of evaluations can enable doctors to identify the dementia subtype and begin early treatment of symptoms, explains the Alzheimer's Association. Evaluati... More » Health Conditions & Diseases Mental Health

Signs of bipolar disorder in children include a combination of several symptoms, such as rapidly changing moods that last a few days or hours, defiance of authority, hyperactivity and agitation, destructive rages, and ex... More »