When you always think you have an illness it's usually a result of an illness anxiety disorder which is also called hypochondriasis or health anxiety.
With hypochondriasis or health anxiety you tend to worry excessively that you are or may sometime become seriously ill.
And you may also have no physical symptoms.
Hypochondriasis usually develops during adulthood.
Symptoms of hypochondriasis include a long-term and intense fear of having a serious condition and worry that minor symptoms indicate something serious.
A person with hypochondriasis may frequently visit or switch doctors.
Counseling and medications may help with hypochondriasis.
Things that help with hypochondriasis include.
Keep a diary. Note how often you check your body, ask people for reassurance, or look at health information.
Challenge your thoughts. Draw a table with 2 columns.
Keep busy with other things.
Get back to normal activities.