It is possible for a traumatic event, such as experiencing food poisoning with symptoms like vomiting and diarrhea, to potentially trigger or contribute to the development of post-traumatic stress disorder (PTSD) in some individuals. However, it's essential to recognize that PTSD is typically associated with exposure to a life-threatening or severely distressing event, and not everyone who experiences such events will develop PTSD.
The fear of vomiting (emetophobia) you mentioned is a separate issue and can be a specific phobia. Specific phobias are intense fears of specific objects, situations, or experiences that may cause significant distress and interfere with daily life. Emetophobia can be triggered or exacerbated by past experiences, including traumatic ones, but it can also develop due to various other reasons.
If your fear of vomiting is severely impacting your life and causing significant distress, it's essential to seek professional help from a mental health expert. They can provide a proper assessment, diagnose any conditions that may be present, and suggest appropriate treatment options. Cognitive-behavioral therapy (CBT) is one of the common approaches used for specific phobias, as it helps individuals address and cope with their fears in a structured manner.
Remember, reaching out to a mental health professional is the best way to understand your specific situation and receive personalized guidance and support. They can help you work through your fears and improve your overall quality of life.