Atypical Anorexia Nervosa is a serious eating disorder under the category of Other Specified Feeding or Eating Disorder (OSFED). It involves the same psychological and behavioral features as classic Anorexia Nervosa, including restriction, intense fear of weight gain, and body image disturbance, but the individual’s weight remains within or above the normal range despite significant weight loss.
Individuals with Atypical Anorexia engage in persistent dieting, fasting, or excessive exercise that leads to substantial weight loss. They experience intense fear of gaining weight and have distorted perceptions of body shape or size. Unlike classic Anorexia, severity is not defined by being underweight, but by the rate of weight loss and the psychological and physiological impact.
Rapid weight loss can produce severe medical complications similar to—or sometimes more serious than—those in low-weight Anorexia. Common risks include slow heart rate (bradycardia), low blood pressure, dizziness upon standing (orthostatic hypotension), electrolyte imbalances, loss of menstrual periods, and dangerously low body temperature. Patients often require immediate and intensive care despite having a “normal” weight.
Treatment must be comprehensive, targeting both physical restoration and psychological recovery. Nutritional rehabilitation with a specialized dietitian restores metabolic function and healthy weight. Family-Based Treatment (FBT) supports adolescents in structured refeeding, while Cognitive Behavioral Therapy (CBT-E) helps adults challenge fears and restrictive behaviors. Continuous medical monitoring ensures safety during refeeding and recovery. With timely, specialized care, full recovery from Atypical Anorexia Nervosa is achievable.
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