Wednesday, 5 August 2026

Psychological Disorders: Anxiety, Mood Disorders, and PTSD

 


Anxiety Disorders

Anxiety disorders involve excessive fear, anxiety, or related behavioral disturbances that can interfere with a person's everyday life.

Everyone experiences fear and anxiety at times. However, an anxiety disorder involves symptoms that become excessive, persistent, or disruptive and can interfere with:

  • Work or education

  • Relationships

  • Social activities

  • Sleep

  • Everyday activities

  • A person's ability to function normally

Phobias

A phobia is an intense and persistent fear of a particular object, situation, or activity.

The fear is much greater than the actual level of danger and can cause a person to avoid the thing they fear.

Examples can include fears of:

  • Animals

  • Heights

  • Flying

  • Injections

  • Certain situations

The important point is that a phobia becomes a psychological problem when the fear or avoidance significantly interferes with a person's life.


Obsessions and Compulsions

Obsessions

Obsessions are recurring and unwanted thoughts, urges, or mental images that cause distress or anxiety.

A person may find that the same thought keeps returning even when they do not want it to.

Compulsions

Compulsions are repetitive behaviors or mental acts that a person feels driven to perform, often in response to an obsession.

For example, a person may repeatedly check something because they are afraid that something bad will happen if they do not check it.

The cycle can become:

Obsession → Anxiety/Distress → Compulsion → Temporary Relief → Obsession returns

This pattern is an important feature of Obsessive-Compulsive Disorder (OCD).


Mood Disorders

Mood disorders involve significant disturbances in a person's emotional state.

They can involve periods of:

  • Severe sadness

  • Hopelessness

  • Loss of interest or pleasure

  • Extreme elevation of mood

  • Increased energy

  • Impulsivity

Major Depressive Disorder

Major depression can cause a person to experience overwhelming:

  • Sadness

  • Despair

  • Hopelessness

  • Loss of interest

  • Loss of pleasure

A person may also experience changes in sleep, appetite, energy, concentration, and other aspects of everyday functioning.

One important symptom is anhedonia, which means a reduced ability to experience pleasure from activities that were previously enjoyable.


Bipolar Disorder

Bipolar disorders involve significant changes in mood, energy, activity levels, and functioning.

Some people with bipolar disorder experience alternating periods of mania or hypomania and depression, although the exact pattern varies between individuals.

Mania

During a manic episode, a person may experience:

  • Excessive or unusually elevated mood

  • Very high energy

  • Increased activity

  • Reduced need for sleep

  • Rapid thoughts or speech

  • Increased confidence

  • Impulsivity

  • Risk-taking behavior

Bipolar Disorder and ADHD

Some symptoms of mania can look similar to symptoms associated with ADHD, such as:

  • Impulsivity

  • Increased activity

  • Difficulty slowing down

  • Rapid speech

  • Difficulty concentrating

However, bipolar disorder and ADHD are different disorders.

One important distinction is that ADHD is generally a neurodevelopmental disorder with persistent symptoms, whereas manic episodes are distinct periods of significant mood and behavioral change.

Therefore, it is important to study both the similarities and differences rather than assuming that the disorders are the same.


Post-Traumatic Stress Disorder (PTSD)

Post-Traumatic Stress Disorder (PTSD) is classified in the DSM under Trauma- and Stressor-Related Disorders.

PTSD can develop after a person experiences or is exposed to a traumatic or extremely stressful event.

Examples of potentially traumatic experiences can include:

  • Assault

  • Abuse

  • Serious accidents

  • Combat

  • Natural disasters

  • Serious injury

  • Threats to a person's life or safety

Not everyone who experiences a traumatic event develops PTSD.

Trauma and the Mind

A traumatic experience can continue to affect a person's thoughts, emotions, memories, and behavior even after the event has ended.

Symptoms may include:

  • Nightmares

  • Flashbacks

  • Distressing memories

  • Avoiding reminders of the event

  • Difficulty sleeping

  • Being constantly alert or on edge

  • Difficulty concentrating

  • Negative changes in thoughts or mood

  • Emotional distress when reminded of the trauma

A person may feel as though the traumatic event is still happening even though it occurred a long time ago.


PTSD and Memories

Traumatic memories can remain distressing for a long time.

A person may:

  • Think about the event repeatedly.

  • Have unwanted memories.

  • Experience nightmares.

  • Have flashbacks.

  • Feel emotionally or physically distressed when reminded of what happened.

  • Struggle to stop thinking about the event.

It can sometimes feel like the mind is “stuck on repeat”, with the same memories or thoughts returning again and again.

However, people's responses to trauma are different.

Some people experience symptoms for a long time, while others gradually become better able to cope with their memories and symptoms. Recovery does not necessarily mean that the memory disappears. A person may continue to remember what happened while finding that the memory becomes less overwhelming or easier to manage.


PTSD Severity and Diagnosis

When professionals assess PTSD, they do not simply ask whether someone has experienced something frightening.

They consider the person's symptoms, their duration, their impact on everyday functioning, and whether the symptoms meet established diagnostic criteria.

The severity or nature of a traumatic experience can influence a person's response, but there is no simple rule that a particular event will automatically cause PTSD.

Two people can experience the same event and respond very differently.


Important Point About Anger

Anger by itself does not mean that someone has PTSD.

A person may swear, lose patience, become irritable, or become angry without having a mental health disorder.

However, irritability and angry outbursts can occur as symptoms associated with PTSD in some people.

For example, someone who becomes easily frustrated or angry may be experiencing a number of different things, including personality, stress, learned behavior, poor emotional regulation, or another mental health difficulty.

It would not be appropriate to diagnose PTSD simply because someone has anger or a short temper.


Key Takeaways

Anxiety Disorders

Excessive fear or anxiety → distress and interference with everyday life

Phobias

Extreme fear of a particular object or situation → avoidance and disruption

Obsessions and Compulsions

Unwanted recurring thoughts → distress → repetitive behavior or mental act

Major Depression

Persistent low mood, hopelessness, and/or loss of pleasure → significant impact on life

Bipolar Disorder

Episodes of mania/hypomania and depression → major changes in mood, energy, and behavior

PTSD

Traumatic experience → possible lasting changes in memories, emotions, thoughts, and behavior

The Big Idea

Psychological disorders are more than ordinary emotions or behaviors.

Feeling anxious, sad, angry, frightened, or energetic is part of being human. A disorder is considered when symptoms become persistent, severe, distressing, or disruptive enough to meet established diagnostic criteria and significantly affect a person's functioning.

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Psychological Disorders: Anxiety, Mood Disorders, and PTSD

  Anxiety Disorders Anxiety disorders involve excessive fear, anxiety, or related behavioral disturbances that can interfere with a person...