Final answer:
A patient experiencing vomiting, signs of shock, and a history of eating disorder and alcohol abuse is likely suffering from bulimia nervosa, an eating disorder characterized by binge eating and compensatory behaviors such as vomiting.
Step-by-step explanation:
The patient's symptoms of vomiting, signs of shock, history of eating disorder and alcohol abuse are indicative of bulimia nervosa. Bulimia nervosa is an eating disorder characterized by episodes of binge eating followed by attempts to compensate through methods such as vomiting or laxative use.