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Schizophrenia often has misdiagnosed hidden cause: The book "Preventing Misdiagnosis of Women" reports on a study citing that 83% of people with a diagnosis of schizophrenia actually had brain lesions (i.e. brain tumors) or temporal lobe seizures. See Preventing Misdiagnosis of Women (by Klonoff and Landrine); see also introduction to schizophrenia.
Cushing's disease can be mistaken for depression: Cushing's disease (or similarly Cushing's syndrome) is a possible misdiagnosis for a person diagnosed with depression. It is an endocrine disorder with many depressive-like characteristics, but also some physical symptoms; see symptoms of Cushing's disease. Cushing's disease may also have schizophrenia-like symptoms such as paranoia and delusions, leading to a misdiagnosis of schizophrenia. Manic or euphoria type symptoms are also possible, with a misdiagnosis of bipolar disorder. See overviews of depression, bipolar disorder, schizophrenia, and Cushing's disease.
Manic-depressive (bipolar) disorder often misdiagnosed: Bipolar disorder, also called manic-depressive disorder, is often misdiagnosed before reaching a correct diagnosis. Some of the common misdiagnoses include depression and schizophrenia. See introduction to bipolar disorder.
Epilepsy misdiagnosed as schizophrenia: The book "Preventing Misdiagnosis of Women" reports on a case of a woman diagnosed with schizophrenia, but later diagnosed with a form of epilepsy called "temporal lobe epilepsy". A variety of sensory symptoms, such as the feeling of the floor rushing upwards, were misdiagnosed as "paranoia". See schizophrenia or epilepsy.
Various mental health symptoms caused by rare epilepsy: Temporal lobe epilepsy is a less common form of epilepsy that does not have the typical physical seizures. Patients can suffer from symptoms such as depression, moodiness, anger, irritability, and misdiagnosis of this condition as depression is common. Some patients also suffer hallucinations and other similar symptoms, or even severe psychotic symptoms, making a misdiagnosis of schizophrenia possible. Mood changes and behavioral symptoms also make a misdiagnosis of bipolar disorder possible. See the overview of temporal lobe epilespy.
Rare seizure-less epilepsy misdiagnosed as various conditions: A complex partial seizure disorder, such as temporal lobe epilepsy can be misdiagnosed as various conditions. Some of the possible misdiagnoses include depression, bipolar disorder, schizophrenia, borderline personality disorder, multiple personality disorder, somatization disorder, hypochrondria, an anxiety disorder, sexuality disorders, hysteria, and fugue.
Lupus is often misdiagnosed as other conditions: Systemic lupus erythematosus (SLE), often simply called "lupus", is a difficult disease to diagnose and can manifest with numerous symptoms. Some of the possible misdiagnoses include depression, bipolar disorder, anorexia nervosa, chronic fatigue syndrome, fibromyalgia, schizophrenia (a less common manifestation of lupus with hallucinations and/or delusions), conversion disorder, somatization disorder, hysteria and other diagnoses. See the overview of lupus or symptoms of lupus.
Undiagnosed stroke leads to misdiagnosed aphasia: BBC News UK reported on a man who had been institutionalized and treated for mental illness because he suffered from sudden inability to speak. This was initially misdiagnosed as a "nervous breakdown" and other mental conditions. He was later diagnosed as having had a stroke, and suffering from aphasia (inability to speak), a well-known complication of stroke (or other brain conditions).
Dementia may be a drug interaction: A common scenario in aged care is for a patient to show mental decline to dementia. Whereas this can, of course, occur due to various medical conditions, such as a stroke or Alzheimer's disease, it can also occur from a side effect or interaction between multiple drugs that the elderly patient may be taking. There are also various other possible causes of dementia.
ADHD under-diagnosed in adults: Although the over-diagnoses of ADHD in children is a well-known controversy, the reverse side related to adults. Some adults can remain undiagnosed, and indeed the condition has usually been overlooked throughout childhood. There are as many as 8 million adults with ADHD in the USA (about 1 in 25 adults in the USA). See misdiagnosis of ADHD or symptoms of ADHD.
Bipolar disorder misdiagosed as various conditions by primary physicians: Bipolar disorder (manic-depressive disorder) often fails to be diagnosed correctly by primary care physicians. Many patients with bipolar seek help from their physician, rather than a psychiatrist or psychologist. See misdiagnosis of bipolar disorder.
Eating disorders under-diagnosed in men: The typical patient with an eating disorder is female. The result is that men with eating disorders often fail to be diagnosed or have a delayed diagnosis. See misdiagnosis of eating disorders or symptoms of eating disorders.
Depression undiagnosed in teenagers: Serious bouts of depression can be undiagnosed in teenagers. The "normal" moodiness of teenagers can cause severe medical depression to be overlooked. See misdiagnosis of depression or symptoms of depression.
Undiagnosed anxiety disorders related to depression: Patients with depression (see symptoms of depression) may also have undiagnosed anxiety disorders (see symptoms of anxiety disorders). Failure to diagnose these anxiety disorders may worsen the depression. See misdiagnosis of depression or misdiagnosis of anxiety disorders.
Some of the causes, which may potentially be dangerous or fatal if left undiagnosed, may include:
The following list of conditions have 'Delusions' or similar listed as a symptom in our database. This computer-generated list may be inaccurate or incomplete. Always seek prompt professional medical advice about the cause of any symptom.
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The following list of medical conditions have 'Delusions'
or similar listed as a medical complication in our database.
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