F43: Reaction to severe stress, and adjustment disorders

The group of conditions under the title "Reaction to severe stress, and adjustment disorders" encapsulates various mental and emotional responses to extremely stressful or traumatic events or significant life changes. These conditions can arise after exposure to major stressors such as natural disasters, violent crimes, serious accidents, or following critical life events such as divorce, retirement, or job loss. Common symptoms can include feelings of hopelessness, constant worrying, sleep problems, lack of concentration, and physical complaints without a known medical cause. The severity and type of symptoms vary widely and can either appear immediately following the stress, or have a delayed onset. Disease progression is diverse with some individuals experiencing short-term effects, while others might have long-lasting complications impacting their mental and physical health. These conditions can affect numerous systems in the body, including the nervous system, the endocrine system, and the immune system.