V: Mental and behavioural disorders

F40-F48: Neurotic, stress-related and somatoform disorders

Neurotic, stress-related, and somatoform disorders are a collection of mental health issues characterized by high levels of anxiety, stress, or persistent thoughts about physical symptoms. These disorders can be triggered by stressful life events, disasters, or traumatic experiences. They're not contagious and cannot be transmitted from person to person. Common symptoms across these disorders include intense worry, irritability, difficulty sleeping, and physical signs like headaches or a racing heartbeat. The disease progression varies widely, with some people experiencing episodic symptoms while others may suffer from chronic, long-term conditions. It's also important to know that these disorders primarily affect the mental, not physical, health of a person, though the perceived physical symptoms can be very real to the individual suffering from the disorder.