Contamination — fear of coming into contact with something or someone that is dirty, polluted, or infectious that could cause illness or even death a loved one or yourself.
Unwanted Sexual Thoughts — fear of acting in an inappropriate sexual manner or way toward others (such as children) or constant questioning of one’s sexual preference.
Violent Intrusive Thoughts — fear of carrying out violent acts and causing harm to loved ones or other people.
Magical Thinking — fear that certain bad thoughts or ideas are connected to increased risk of harm coming to loved ones or themselves.
Religious Intrusive Thoughts — fear of committing an immoral or unacceptable act pertaining to religious beliefs or practices.
Symmetry and Orderliness — a compulsion to have everything lined up symmetrically ‘just right’; the obsessive fear might be to ensure everything feels ‘just right’ to prevent discomfort or sometimes to prevent harm from occurring (see Magical Thinking).
Here is an example:
Sufferers may spend a lot of time trying to get the symmetry ‘just right’ and this time-consuming checking can result in them being extremely late for work and appointments. They may also become mentally and physically drained if the compulsions take a considerable amount of time. Sufferers may also avoid social contact at home to prevent the symmetry and order being disrupted, which can have a negative impact on social interaction and relationships.