Symptoms Documents (Listed by Topic)

This page lists mental health disorder symptoms articles in our database sorted by topic name. For more complete information on a particular disorder, please review our topics list.

  • Premenstrual Dysphoric Disorder

    Premenstrual Dysphoric Disorder
    Symptoms occur repeatedly during the premenstrual phase of the woman's cycle and decrease or disappear around the onset of her period or shortly after.  More
  • Prevalence and Co-Occurring Conditions

    Prevalence and Co-Occurring Conditions
    Although major depressive disorder (MDD) can appear at any age, it typically is first seen during puberty. The highest rate of MDD is seen with people in their 20's but can easily occur later in life.  More
  • Differential Diagnosis and Specifiers of Major Depressive Disorder

    Differential Diagnosis and Specifiers of Major Depressive Disorder
    In addition to making a diagnosis of a particular disorder, a clinician can also say how it is different from other conditions that may have similar symptoms. This is known as a differential diagnosis. This information can help a clinician narrow down which treatments may work best for the patient. It may also be used to provide information about a person's anticipated course of the disorder and their prognosis (outcome). More
  • The Development and Course of Major Depressive Disorder

    The Development and Course of Major Depressive Disorder
    It is now understood that major depressive disorder (MDD) can first occur at any age. Most of the time it appears more noticeably at the start of puberty. The highest rate occurs with people in their 20s, but it is not uncommon for people to experience depression later in life.  More
  • Classic Symptoms of Major Depressive Disorder

    Classic Symptoms of Major Depressive Disorder
    A person is diagnosed with Major Depressive Disorder when they experience five or more of the following symptoms during the same two-week period for most of the day or nearly every day: More
  • What Are Other Suicide Warning Signs?

    What Are Other Suicide Warning Signs?
    In addition to suicidal thoughts, there are other warning signals that suggest suicide risk as well as the possible presence of a mental or physical illness.  More
  • Central Sleep Apnea

    This disorder occurs when the brain doesn't send the right signals to start the breathing muscles during sleep, which causes the person to temporarily stop breathing. More
  • Symptoms - Internet Addiction

    As Internet access becomes more widespread, Internet addiction becomes a growing concern. The DSM-5 does not currently recognize Internet gaming disorder as an official diagnosis. Instead, proposed criteria have been placed in Section III of the DSM-5. The section lists proposed diagnoses for future consideration and further study. The proposed diagnostic criteria closely resemble the criteria for substance use disorders.

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  • Symptoms - Conversion Disorder

    This disorder, also referred to as Functional Neurological Symptom Disorder, involves having physical symptoms that appear after psychological stress or a traumatic physical or psychological event has taken place. More
  • Illness Anxiety Disorder

    The symptoms of this disorder include being preoccupied with having or getting a serious illness. More
  • Symptoms - Somatization Disorder

    Somatic Symptom Disorder is diagnosed when the following symptoms are ongoing and typically last more than 6 months: More
  • Recognizing Abuse

    Recognizing Abuse
    Not everyone who is being abused understands that what they are experiencing is abuse. Some may recognize that something isn't right about how they are treated, but they may be afraid to speak up and name it as abuse for fear of retribution from their abuser. More
  • Symptoms of Specific Learning Disorder

    Specific Learning Disorder is diagnosed when there are difficulties learning and using academics skills for at least 6 months in one or more of the following areas: More
  • Symptoms of Grief

    Though each person grieves in unique ways, there are common behavioral, emotional, and physical signs and symptoms that people who are grieving typically experience. More
  • Post-Traumatic Stress Disorder (PTSD) Criteria

    Criteria for PTSD More
  • Acute Stress Disorder Criteria

    Criteria for Acute Stress Disorder More
  • Diagnosis: The Signs and Symptoms of Obsessive-Compulsive Disorder (OCD)

    Diagnosis: The Signs and Symptoms of Obsessive-Compulsive Disorder (OCD)
    As the name implies, the obsessive-compulsive disorder (OCD) is the kingpin of the entire category of disorders called obsessive-compulsive and related disorders. Obsessions are repetitive and distressing thoughts, urges, or imagery that are experienced as uncontrollable. Compulsions are repetitive behaviors or mental acts that a person feels driven to perform in response to obsessions.  More
  • Symptoms of Schizophrenia

    Symptoms of Schizophrenia
    Schizophrenia is characterized by two families of symptoms, termed "positive" and "negative". Positive symptoms are symptoms which are in excess of normal behavior.  More
  • Symptoms of Brief Psychotic Disorder

    Individuals with brief psychotic disorder experience delusions, hallucinations, and/or disorganized speech and behavior that lasts for at least one day.  More
  • Symptoms of Shared Psychotic Disorder

    Symptoms of Shared Psychotic Disorder
    This seldom diagnosed, but all-too-commonly observed type of psychosis occurs when an otherwise healthy person develops delusions after associating with one or more independently psychotic delusional people. More
  • Symptoms of Delusional Disorder

    Like schizophrenia, delusional disorder is characterized by the presence of delusions that persist for at least one month, and which often involve prominent psychotic themes: erotomanic, grandiose, jealous, persecutory, and/or somatic.  More
  • Symptoms of Schizophrenia

    A diagnosis of schizophrenia can be made when two or more prominent symptoms consistent with the illness (e.g., delusions, hallucinations, disorganized speech or behavior, negative symptoms) are present for the better part of a month or more, and substantial social or occupational functioning problems are noted to exist. More
  • Symptoms of Schizoaffective Disorder

    Symptoms of Schizoaffective Disorder
    Schizoaffective disorder represents the DSM's attempt to describe a disorder characterized by both the psychotic thought problems of schizophrenia, and the mood problems of depression or bipolar disorder. More
  • Symptoms of Schizophreniform Disorder and Psychotic Disorder NOS

    Symptoms of Schizophreniform Disorder and Psychotic Disorder NOS
    Schizophreniform Disorder is similar to but milder than schizophrenia. Psychotic Disorder NOS is a diagnostic category for "miscellaneous psychoses" which cannot yet find better diagnostic homes in another diagnosis. More
  • Hypomania and Hypomanic Episodes Defined

    Hypomania and Hypomanic Episodes Defined
    Not everyone who becomes manic experiences the full-blown syndrome of a manic episode. Hypomanic individuals show an expansive, energized and sometimes elated mood, with rapid thinking and pressured speaking in evidence. At a minimum (for the label hypomania to be appropriately applied), this expanded mood state must persist for at least four straight days.  More
  • Bipolar Disorder - Depression, Major Depressive Episodes and Mixed Episodes

    Bipolar Disorder - Depression, Major Depressive Episodes and Mixed Episodes
    Just as the manic aspect of bipolar disorder is associated with manic episodes, the depressive aspect of bipolar disorder is likewise associated with depressive episodes. The severe form of depressive episode is known as a Major Depressive Episode. More
  • Bipolar Diagnosis and Bipolar I

    Bipolar Diagnosis and Bipolar I
    The DSM's chapter on bipolar disorders presently includes Bipolar I Disorder, Bipolar II Disorder, Cyclothymia, and Bipolar Disorder, Not Otherwise Specified (NOS).  More
  • Bipolar II Disorder, Cyclothymia, and Bipolar Disorder, NOS

    Bipolar II Disorder, Cyclothymia, and Bipolar Disorder, NOS
    Bipolar II Disorder is characterized by one or more major depressive episodes with at least one hypomanic episode in which hospitalization is not required. More
  • Symptoms of Lewy Body Dementia

    The cognitive symptoms of people with LBD may fluctuate frequently (moment-to-moment, hour-to-hour, or day-to-day). Individuals will be alert (and seem "normal"), and then suddenly become extremely confused, unable to pay attention, or unable to make decisions. More
  • Symptoms of Alzheimer's Disease

    Symptoms of Alzheimer's Disease
    Alzheimer's Disease is difficult to diagnose because symptoms frequently resemble the symptoms of many other diseases, such as the dementias mentioned earlier (e.g., Vascular Dementia, Lewy Body Dementia). More
  • Traumatic Brain Injuries

    Traumatic Brain Injuries
    Traumatic Brain Injuries (TBIs; also referred to as acquired brain injuries or head injuries) occur when people's brains are injured due to physical trauma. More
  • Symptoms of ADHD

    Symptoms of ADHD
    Learn the symptoms of ADHD More
  • Symptoms of Alzheimer's Disease

    Symptoms of Alzheimer's Disease More