Somatic OCD is an OCD category which is frequently known as health anxiety. This sub-type of OCD includes unwanted intrusive thoughts that one has an undiagnosed medical problem with rituals done in order to confirm this is not the case. Something like a headache might trigger the onset of intrusive thoughts/fears of having a brain tumor, cancer or some serious disease. In order to alleviate anxiety individuals often engage in rituals which may include symptom checking, googling, reassurance seeking and frequent visits to the doctor. Note that this is when there is not a medical reason to believe the individual should be medically evaluated and often individuals with somatic OCD have gone to a doctor and have been cleared medically.