A young female presents with history of abdominal pain, headache, nausea and vomiting and sudden loss of movement of right upper limb. What is the most likely diagnosis?

The history of a young female presenting with abdominal symptoms and sudden neurological symptoms should raise the suspicion for AIP. AIP is an impoant differential diagnosis of conversion disorders. Conversion disorders are usually precipitated by a psychological stressor and present with altered voluntary motor or sensory symptoms. History of abdominal pain and other GI symptoms is not usually seen and their presence is more consistent with the diagnosis of AIP.