Generalised Anxiety Disorder (GAD)

Generalised Anxiety Disorder (GAD), as outlined in the DSM-5 (Diagnostic and Statistical Manual of Mental Disorders, Fifth Edition), is characterised by excessive anxiety and worry about various topics, events, or activities. This worry is often difficult to control and can significantly impact daily functioning. Here’s a more detailed look at the DSM-5 criteria for GAD:

1. Excessive Anxiety and Worry: Individuals with GAD experience persistent anxiety and worry about a range of topics, events, or activities. This worry is excessive and typically more intense than the actual likelihood or impact of the anticipated event.
2. Difficulty in Controlling the Worry: People with GAD find it hard to keep their worry under control. This ongoing worry can be about minor or major issues and often shifts from one concern to another.
3. Physical Symptoms: GAD is associated with various physical symptoms, which might include restlessness or feeling keyed up or on edge, being easily fatigued, difficulty concentrating, irritability, muscle tension, and sleep disturbances (difficulty falling or staying asleep, or restless, unsatisfying sleep).
4. Duration: For a diagnosis of GAD, the anxiety and worry must occur on more days than not for at least six months. The focus of the anxiety and worry should not be confined to features of another mental disorder or a physiological effect, such as substance abuse or another medical condition.
5. Functional Impairment: The anxiety, worry, or physical symptoms cause clinically significant distress or impairment in social, occupational, or other important areas of functioning. This means that the symptoms have a marked impact on the person’s daily life and ability to function effectively.
6. Not Attributable to Other Factors: The disturbance is not attributable to the physiological effects of a substance (e.g., a drug, a medication) or another medical condition (e.g., hyperthyroidism) and does not occur exclusively during the course of another mental disorder (e.g., Panic Disorder, Social Anxiety Disorder).

Psychologically, GAD can be understood through various models. Cognitive-behavioural models emphasise the role of maladaptive beliefs and thinking patterns, such as overestimation of danger and underestimation of one’s ability to cope, which contribute to excessive worry. Furthermore, behavioural theories suggest that avoidance behaviours play a crucial role in the maintenance of GAD. Psychoanalytic theories might focus on underlying unconscious conflicts or past experiences that are contributing to the anxiety.

Treatment typically includes cognitive-behavioural therapy (CBT), which helps patients identify and challenge their worrisome thoughts and beliefs, and develop better coping mechanisms. Pharmacotherapy, such as selective serotonin reuptake inhibitors (SSRIs), can also be effective, often in conjunction with psychotherapy.

Breakdown of Criteria for Generalised Anxiety Disorder:

1. Criterion A (Excessive Anxiety and Worry): Excessive anxiety and worry (apprehensive expectation) occurring more days than not for at least six months, about a number of events or activities (such as work or school performance).
2. Criterion B (Difficulty Controlling the Worry): The individual finds it difficult to control the worry.
3. Criterion C (Additional Symptoms): The anxiety and worry are associated with three (or more) of the following six symptoms (with at least some symptoms having been present for more days than not for the past six months):

• Restlessness or feeling keyed up or on edge.
• Being easily fatigued.
• Difficulty concentrating or mind going blank.
• Irritability.
• Muscle tension.
• Sleep disturbance (difficulty falling or staying asleep, or restless, unsatisfying sleep).

1. Criterion D (Clinically Significant Distress or Impairment): The anxiety, worry, or physical symptoms cause clinically significant distress or impairment in social, occupational, or other important areas of functioning.
2. Criterion E (Not Attributable to a Substance or Medical Condition): The disturbance is not attributable to the physiological effects of a substance (e.g., a drug of abuse, a medication) or another medical condition (e.g., hyperthyroidism).
3. Criterion F (Not Better Explained by Another Mental Disorder): The disturbance is not better explained by another mental disorder (e.g., anxiety or worry about having panic attacks in Panic Disorder, negative evaluation in Social Anxiety Disorder [social phobia], contamination or other obsessions in Obsessive-Compulsive Disorder, separation from attachment figures in Separation Anxiety Disorder, reminders of traumatic events in Posttraumatic Stress Disorder, gaining weight in Anorexia Nervosa, physical complaints in Somatic Symptom Disorder, perceived appearance flaws in Body Dysmorphic Disorder, having a serious illness in Illness Anxiety Disorder, or the content of delusional beliefs in Schizophrenia or Delusional Disorder).

The diagnosis and treatment of Generalised Anxiety Disorder should be carried out by qualified mental health professionals who can apply these criteria within the appropriate clinical context.