Chronic Fatigue Syndrome Symptoms, Signs, Risk Factors, and Diagnosis
Chronic fatigue syndrome is a serious, often disabling illness that affects energy, thinking, sleep, pain, and the body’s response to physical or mental effort....
Chronic Depressive Disorder Symptoms, Signs, and Risk Factors
Chronic depressive disorder describes a long-lasting pattern of depressive symptoms that can become woven into daily life. Many people do not experience it as...
Chronic anxiety causes and risk factors: Why persistent worry develops
Anxiety is part of the body’s normal alarm system, but it becomes a health concern when worry, fear, tension, or nervous-system arousal persist beyond...
Chronic Adjustment Disorder Symptoms, Causes, Risk Factors, and Complications
A stressful life event does not have to be catastrophic to overwhelm a person’s ability to cope. A relationship breakup, job loss, illness, family...
Childhood-Onset Schizophrenia Overview: Early Signs, Risk Factors, and Diagnosis Context
Childhood-onset schizophrenia is a rare but serious psychiatric condition in which symptoms of schizophrenia begin before age 13. It can affect how a child...
Charles Bonnet syndrome and Vision Loss: Symptoms, Causes, and Signs
Seeing things that are not actually there can be frightening, especially when the images are vivid or detailed. Charles Bonnet syndrome is a specific...
Central sleep apnea: Overview, Symptoms, Causes, Risk Factors, and Complications
Central sleep apnea is a sleep-related breathing disorder in which breathing repeatedly slows or stops because the brain’s breathing-control system does not send a...
Catatonic Schizophrenia Overview, Diagnosis Context, and Complications
Catatonia can be frightening to witness because it may look like a person has become “frozen,” unreachable, unusually rigid, or suddenly agitated in a...
Catatonia Signs, Symptoms, Causes, and Diagnostic Context
Catatonia is a serious neuropsychiatric syndrome that affects movement, speech, behavior, awareness, and sometimes the body’s automatic functions, such as heart rate, blood pressure,...
Catastrophizing disorder: Signs, Risk Factors, and Mental Health Effects
Catastrophizing is a pattern of thinking in which the mind rapidly jumps to the worst possible outcome and treats that outcome as likely, unbearable,...
Cataplexy in Adults and Children: Signs, Causes, and Risks
Cataplexy is a sudden, temporary loss of muscle tone that happens while a person is awake, usually after a strong emotion such as laughter,...
Capgras Syndrome Signs and Symptoms: How the Condition Appears
Capgras syndrome is a rare but serious form of delusional misidentification. A person with this syndrome believes that someone familiar, often a spouse, parent,...
Cannabis-Induced Psychotic Disorder Overview: Symptoms, Signs, and Risks
Cannabis-induced psychotic disorder is a serious mental health condition in which hallucinations, delusions, paranoia, or severely disorganized thinking develop in close connection with cannabis...
Caffeine-Induced Anxiety Disorder Signs, Risk Factors, and Complications
Caffeine can sharpen alertness for some people, but in others it can push the body into a state that feels frighteningly similar to anxiety...
By proxy syndrome Explained: Signs, Causes, and Diagnostic Context
By proxy syndrome is a serious pattern in which one person falsifies, exaggerates, or causes illness in someone else, usually someone dependent on their...
Bulimia Nervosa Symptoms, Signs, Causes, and Health Risks
Bulimia nervosa is a serious eating disorder marked by repeated episodes of binge eating followed by behaviors meant to “undo” or compensate for eating....