In this paperwork eating disorders in children and adolescents are described. Most children trough their development have at least a short period when they show difficulties with feeding and eating. Food refusal, eating only a very narrow selection of foods, sneaking food, eating at the wrong time, and exhibiting rituals around food are among the more common complaints parents report about their children`s eating habits. There are three main types of eating disorders at adolescents: anorexia nervosa, bulimia and compulsive overating. In this paperwork clasifications, types, symptoms and ways of treatment for each individual mentioned feeding disorder are listed. Biological, psychological and social factors have important role in development of eating disorders. Often cited biological factors are age, gender and body weight, whilst the psychological factors that play an important role are self-esteem, perfectionism, and satisfaction with body image. When it comes to social factors often cited are the influence of media, peers and parents on body image. The programs of infirmary treatment include different forms of psychotherapy (family and individual, play therapy, group therapy), and hospital treatment diet recovery (Diet Therapy), medical recovery, family treatment and psychosocial recovery. Patientswho are vitaly endagered are sent to inhospital treatment, otherwise they start with out-patient treatment first. The role of nurse is taking a nurse medical history, health care planning by setting the appropriate nurse diagnosis and interventions and holistic approach (nurse`s role in multidisciplinary team consisting of specialist in pediatry, pshychiatry, psychologist, nutritionist) to the patient. The most important role of nurse is to help the patient and family to accept disease and motivate patient to cope with symptoms actively, and successfully.