The primary aim of this study is to characterize the quality of life of youth with Cyclic Vomiting Syndrome (CVS) as well as the strategies they use to cope with stress, their strengths and vulnerabilities, and to assess symptoms of depression and anxiety in these at risk youth. The impact of CVS on the child's parent and family will also be assessed.

A second aim is to evaluate the associations among coping strategies, personal strengths and vulnerabilities and the frequency and intensity of CVS attacks to determine if particular coping styles and personal characteristics are associated illness severity, psychiatric co-morbidity and quality of life

Inclusion Criteria:

• Diagnosis of CVS

Exclusion Criteria:

• Children and parents who are not English speaking
• Youth with significant developmental delay, mental retardation, psychotic symptoms, or other significant mental impairments and those with other major medical disorders such as IDDM, congenital heart disease, cystic fibrosis, etc.

Youth who meet consensus criteria for CVS as determined by Dr. B. Li and their parents will be recruited from those being seen in the weekly outpatient CVS clinic at Children's Hospital of Wisconsin