Health - Mental Health Unit

What is Stress?

Stress can be defined as a physical and emotional response to challenging or threatening situations. It activates the body's fight or flight response, preparing individuals to face or escape threats.

What is a Stressor?

A stressor is any event, experience, or individual that causes stress. Stressors can be physical, emotional, or environmental.

Examples of a Stressor

  • Work pressure

  • Relationship issues

  • Financial difficulties

  • Life transitions (e.g., moving, changing jobs)

What is Distress?

Distress is a negative form of stress that can result in feelings of anxiety, worry, and unease.
Example: Chronic worry about job security can lead to distressful feelings.

What is Resilience?

Resilience refers to the ability to recover from or adapt to stress or adversity, often leading to personal growth.

Mental Health

Definition

Mental health encompasses emotional, psychological, and social well-being, affecting how individuals think, feel, and act.

The Three Stages of Stress

Stress typically progresses through three stages:

  1. Alarm Stage: The immediate reaction to a stressor.

  2. Resistance Stage: The body tries to adapt to the stressor after prolonged exposure.

  3. Exhaustion Stage: If stress continues, the body's resources are depleted, leading to burnout and other health issues.

The Autonomic Nervous System

Divisions

  1. Sympathetic Nervous System: Activates the fight or flight response.

  2. Parasympathetic Nervous System: Promotes a state of rest and relaxation.

Fight or Flight Response

  • The brain processes threats prompting a release of stress hormones.

  • Hormones: Adrenaline and noradrenaline are primarily released during this response.

Neurotransmitters

Definition

Neurotransmitters are chemicals that transmit signals in the brain and play significant roles in mood and behavior.

Excitatory Neurotransmitters

  • Enhance the transmission of signals between neurons.

  • Examples include glutamate and aspartate.

Inhibitory Neurotransmitters

  • Reduce neuronal excitability and help maintain balance within the nervous system.

  • Examples include GABA and glycine.

Cortisol

Cortisol is a primary stress hormone that is involved in the body's stress response, regulating metabolism and inflammatory responses.

Blood Pressure

Definition

Blood pressure is the force exerted by circulating blood on the walls of blood vessels.

Role of Arteries

Arteries transport oxygen-rich blood away from the heart.

Role of Veins

Veins return deoxygenated blood back to the heart.

Measuring Blood Pressure

  • The stethoscope is placed on the brachial artery.

  • Normal Blood Pressure: 120/80 mmHg (systolic/diastolic).

  • Systolic Blood Pressure: Pressure during heartbeats.

  • Diastolic Blood Pressure: Pressure between heartbeats.

Hypertension vs Hypotension

  • Hypertension: Abnormally high blood pressure.

  • Hypotension: Abnormally low blood pressure.

Vasoconstriction and Vasodilation

  • Vasoconstriction: Narrowing of blood vessels, increasing blood pressure.

  • Vasodilation: Widening of blood vessels, decreasing blood pressure.

Vasovagal Syncope

A sudden drop in heart rate and blood pressure, often leading to fainting, triggered by stress or pain.

Hyperventilation

  • A state of rapid breathing that leads to a decrease in carbon dioxide levels in the blood.

Parasympathetic Nervous System

Promotes relaxation and counteracts the effects of stress.

  • Vagus Nerve: Plays a key role in calming the body after stress by connecting the brain, spinal cord, and organs.

Stress Stages and Effects

2nd and 3rd Stages of Stress

During these stages:

  • The body continues to adapt to stress but may lead to harmful effects like chronic fatigue and irritability.

Harmful Effects of Cortisol

Elevated cortisol levels can negatively impact brain function, particularly affecting areas such as the hippocampus and prefrontal cortex, and can contribute to cognitive decline.

Dementia

Definition

Dementia is characterized by the decline in cognitive function that interferes with daily living.

Causes

  • Blunt force trauma

  • Substance abuse (e.g., alcohol and drugs)

  • Aging

Generalized Anxiety Disorder

Characterized by excessive anxiety and worry about various aspects of life.

Panic Attacks

  • Sudden episodes of intense fear or discomfort leading to physical symptoms such as heart palpitations and shortness of breath.

Panic Disorder

  • A condition marked by recurrent panic attacks.

Anxiety Attacks vs Panic Attacks

  • Anxiety Attacks: Gradual onset of anxiety symptoms.

  • Panic Attacks: Sudden and intense episodes.

Phobias

Irrational fears of specific objects, activities, or situations.

PTSD (Post-Traumatic Stress Disorder)

A mental health condition triggered by experiencing or witnessing a traumatic event.

Psychotherapy

A treatment option for mental health issues involving talking to a trained professional.

Types of Psychotherapy

  1. CBT (Cognitive Behavioral Therapy): Focuses on changing negative thought patterns.

  2. DBT (Dialectical Behavior Therapy): Teaches coping skills.

  3. ACT (Acceptance and Commitment Therapy): Helps individuals accept thoughts and feelings.

  4. PDT (Psychodynamic Therapy): Aims to increase awareness of unconscious thoughts.

  5. SP (Supportive Psychotherapy): Reinforces coping abilities.

Treating Mental Health Problems

This can include both psychotherapy and medication prescribed by psychiatrists.

PTRS (Post-Traumatic Relationship Syndrome)

Causes

  • Physical, sexual, or psychological abuse

  • Infidelity

  • Bad breakups

Symptoms

  • Diminished self-worth and anxiety in new relationships.

Triggers

Reminders of past relationships can evoke distress (e.g., scents, songs).

Cognitive Development

The brain's ability to produce new neurons decreases with age.

Alzheimer's Disease

A specific type of dementia linked to protein buildup in the brain that impairs cognitive function.

Combatting Cognitive Decline

  • Engage in cardio workouts.

  • Consume brain-friendly foods (e.g., berries, omega-3 fatty acids).

  • Avoid substance abuse.

Brain Function and Stress

  • The prefrontal cortex, responsible for memory and emotional regulation, may shrink due to chronic stress, increasing vulnerability to mental disorders.

Conclusion

Understanding stress, its mechanisms, and effects on mental health is crucial for developing effective coping strategies and promoting resilience.