Endoscopy shows erosions - that can be because of multiple causes Biopsy should be done to look at the cause Vomiting can be because of multiple causes Systemic infections Renal injury CNS causes Vestibular involvement Local causes and infections of the GI tract Inflammatory causes Obstructive causes Cyclical vomiting syndrome All this needs to be considered and to be ruled out step wise

Gastric erosions are present in endoscopy. To start treatment for that. Most probably RUT also maybe positive. Further evaluation and treatment to be started . Consult a general surgeon