Misophonia

What is misophonia? 

Misophonia is a condition in which certain auditory stimuli trigger an intense emotional reaction. For instance, people with misophonia may feel anger, anxiety, or disgust to sounds that others typically find ordinary or unremarkable. These reactions occur involuntarily and can be so severe that they interfere with daily life, relationships, and mental health.

What are common triggers for misophonia?

The sounds that trigger misophonia are usually repetitive and related to human actions. Common triggers include:

• eating noises like chewing or slurping
• breathing sounds like sniffing or heavy breathing
• repeated or tapping noises like pen clicking or keyboard typing
• footsteps or repetitive motions like finger drumming

Visual stimuli associated with these sounds, like watching someone chew, can also provoke a reaction. 

The emotional response to misophonia triggers is often immediate and intense. People with misophonia may feel the need to escape the environment, experience symptoms such as an increased heart rate, or struggle to focus on anything other than the triggering sound. Over time, avoidance behaviours can develop. 

What causes misophonia?

The exact cause of misophonia remains unclear. However, studies indicate that misophonia involves hyperconnectivity between the auditory cortex (responsible for processing sound) and the regions of the brain associated with emotional regulation, such as the anterior insular cortex. This heightened connectivity may explain why certain sounds cause such intense emotional reactions. 

Genetics may play a role, as misophonia often runs in families. Environmental factors, such as a traumatic event associated with a particular sound during critical periods of brain development, may also influence the development of the condition. Psychological factors, including co-occurring conditions like anxiety or obsessive-compulsive disorder (OCD), may exacerbate symptoms. 

How is misophonia diagnosed?

There are no defined diagnostic criteria or specific medical tests for misophonia. Instead, the diagnosis is typically based on the patient’s medical history and symptoms. The healthcare professional will:

1. Take a detailed account of the patient’s reactions to sounds and the impact on their daily life.
2. Rule out other conditions that mimic misophonia, like hyperacusis (a heightened sensitivity to all sounds), tinnitus, or anxiety disorders.
3. Use questionnaires to evaluate the severity, impact, and specific characteristics of misophonia.

How can misophonia be treated?

There is currently no cure for misophonia, but several treatment options can help manage its symptoms and improve quality of life. Treatment generally involves a combination of approaches, such as:

• Cognitive behavioural therapy (CBT): Helps identify and modify negative thought patterns and emotional responses associated with trigger sounds.
• Sound therapy: Helps mask or distract from tigger noises by using background noises, like white noise, nature sounds, or headphones.
• Relaxation techniques: Helps reduce stress and manage emotional reactions by using practices like mindfulness, meditation, deep breathing, or progressive muscle relaxation. 
• Support groups: Help reduce feelings of isolation, and provide a sense of community and shared understanding. 

In some cases, medications may be prescribed to manage co-existing conditions like anxiety or depression. While no medications specifically target misophonia, addressing these underlying issues can indirectly alleviate symptoms. 

Is misophonia the same as sound sensitivity?

Misophonia is different from general sound sensitivity, which is known as hyperacusis. Hyperacusis involves an increased sensitivity to the loudness or intensity of all sounds, whereas misophonia is specifically linked to certain sounds that cause an emotional response, regardless of their volume. The two conditions may co-occur, but they have different underlying mechanisms and require different treatment approaches. 

Which specialist treats misophonia?

Misophonia requires a multidisciplinary approach. Specialists who are involved in the diagnosis and treatment include consultants in audiovestibular medicine, who manage conditions related to hearing, balance, and associated communication and neurological disorders.