Health anxiety by proxy (HAP) is a newly introduced term in psychiatry to describe the anxious feelings or fear of having or acquiring a serious illness. It is often accompanied by maladaptive illness behavior in the absence of true somatic symptoms. This, in turn, entails seeking medical advice and therefore doing many unnecessary investigations in an attempt to justify these symptoms. Functional impairment may appear in HAP patients, and this indicates a pathological point. To some extent, it can be said that HAP is similar to health anxiety disorder in terms of symptomatology and items. However, it is imposed on another (usually the patients' children) instead of the patient himself. Many biopsychosocial factors are suggested to play a role in the psychopathology of HAP. Until now, there are no well-established criteria in the Diagnostic and Statistical Manual of Mental Disorders, Fifth Edition, Text Revision (DSM-5-TR) or International Classification of Diseases 11th Revision (ICD-11) to make the diagnosis of health anxiety by proxy. Although treatment protocols are missing, it appears that patients are not responding to treatment protocols for illness anxiety disorder. This requires focusing attention on conducting studies on those patients to develop clear treatment plans to help patients. In this report, we present a 28-year-old female with constant worries about her child's health, which subsequently resulted in seeking medical advice at multiple clinics with different medical specialties. Many factors were thought to be implicated in triggering her current condition. The anxious feelings reflected negatively on the patient's life, resulting in a poor functioning status. A treatment plan was initiated with a dismal response and fluctuating course. Additionally, we discussed the initial definition and the bases that could be used to facilitate the diagnosis and management of HAP disorder.