monotonous speech

difficulté à dormir, diminution du désir sexuel chez les hommes, faiblesse, manque d'appétit

In everyday language depression refers to any downturn in mood, which may be relatively transitory and perhaps due to something trivial. This is differentiated from Clinical depression which is marked by symptoms that last two weeks or more and are so severe that they interfere with daily living. ... 

difficulté à parler, diminution du désir sexuel chez les hommes, la perte de poids, manque d'appétit

Clinical depression (also called major depressive disorder, or sometimes unipolar when compared with bipolar disorder) is a state of intense sadness, melancholia or despair that has advanced to the point of being disruptive to an individual's social functioning and/or activities of daily living. Although a low mood or state of dejection that does not affect functioning is often colloquially referred to as depression, clinical depression is a clinical diagnosis and may be different from the everyday meaning of "being depressed." Many people identify the feeling of being depressed as "feeling sad for no reason", or "having no motivation to do anything." One suffering from depression may feel tired, sad, irritable, lazy, unmotivated, and apathetic. Clinical depression is generally acknowledged to be more serious than normal depressed feelings. It often leads to constant negative thinking and sometimes substance abuse. ... 

discours désorganisé, hallucinations, les changements de comportement, un comportement agressif

Schizophrenia (from the Greek word σχιζοφρένεια, or schizophreneia, meaning "split mind") is a psychiatric diagnosis that describes a mental disorder characterized by impairments in the perception or expression of reality and by significant social or occupational dysfunction. A person experiencing schizophrenia is typically characterized as demonstrating disorganized thinking, and as experiencing delusions or hallucinations, in particular auditory hallucinations. ... 

convulsions, le manque de coordination, les changements de comportement, retard de développement

The diagnostic category pervasive developmental disorders (PDD), as opposed to specific developmental disorders (SDD), refers to a group of five disorders characterized by delays in the development of multiple basic functions including socialization and communication. The most commonly known PDD is (1) Autism, with the remaining identified as (2) Rett syndrome, (3) Childhood disintegrative disorder, (4) Asperger syndrome, and (5) Pervasive Developmental Disorder Not Otherwise Specified (or PDD-NOS). ... 

difficulté à dormir, dépression, manque d'appétit, somnolence

Postpartum depression (also postnatal depression) is a form of clinical depression which can affect women, and less frequently men, after childbirth. It is widely considered to be treatable. Studies report prevalence rates from 5% to 25%, but methodological differences among the studies make the actual prevalence rate unclear. ... 

dépression, irritabilité, les changements de comportement, manque d'appétit

Bipolar disorder, once known as manic-depression, is a psychiatric diagnosis referring to a mental health condition defined by periods of extreme, often inappropriate, and sometimes unpredictable mood states. ... 

confusion, difficulté à marcher, difficulté à parler, le manque de coordination

Huntington's disease (HD), also known as Huntington disease and previously as Huntington's chorea and chorea maior, is a rare inherited neurological disorder affecting up to 8 people per 100,000. It takes its name from the Ohio physician George Huntington who described it precisely in 1872 in his first medical paper. HD has been heavily researched in the last few decades and it is one of the first inherited genetic disorders for which an accurate test can be performed. ... 

confusion, difficulté à marcher, difficulté à parler, le manque de coordination

HD is caused by a trinucleotide repeat expansion in the Huntingtin (Htt) gene; and is one of several polyglutamine (or PolyQ) diseases. This expansion produces an altered form of the Htt protein, mutant Huntingtin (mHtt), which results in neuronal cell death in select areas of the brain. ...