1. Lack of medical knowledge: This person may lack a correct understanding of his physical condition, the seriousness of his illness or how to seek medical help.

2. Worried about the diagnosis result: Some people are afraid of hearing bad diagnosis results, so they choose to avoid medical treatment, hoping that the problem can be solved by themselves or their health can be improved through health preservation.

3. Economic pressure: Medical expenses may be a consideration. Some people may worry that medical treatment will bring high cost burden, so they choose not to see a doctor.

4. Do not believe in health rumors: In today's society, there are many rumors and unscientific ideas about health. This person may be misled by some inaccurate or exaggerated health preservation theories, thinking that as long as he insists on health preservation, he can improve his physical condition, thus ignoring the real need for medical intervention.

It should be noted that the above are just some possible reasons, and the specific situation may vary from person to person. If this person's physical condition seriously affects his normal life, it is suggested that he seek professional medical help as soon as possible in order to get the correct diagnosis and treatment.