Contamination
Fears of germs, illness, bodily fluids or chemicals, often with washing, cleaning or avoidance.
Checking
Repeatedly checking locks, stoves, appliances or messages to prevent something bad from happening.
Harm
Unwanted thoughts or images of hurting someone (or yourself), and a fear of losing control.
Responsibility
An overwhelming sense that it's up to you to prevent harm, illness or mistakes.
Symmetry and ordering
A strong need for things to be even, lined up or in a certain order. When they're not, it feels really uncomfortable, and sometimes like something bad will happen.
“Just right” OCD
An uncomfortable sense that something feels incomplete or “off,” leading to repeating, rereading or redoing things until it finally feels right.
Scrupulosity
Religious or moral fears about sin, blasphemy or being a bad person, with confessing, praying or reassurance-seeking.
Relationship OCD (ROCD)
Constant doubts about whether you really love your partner or whether they're right for you, or getting stuck on their flaws.
Sexual orientation OCD (HOCD)
Distressing, unwanted doubts about your sexual orientation, whatever your orientation is.
Sexual OCD
Unwanted sexual thoughts, images or urges that feel shocking or wrong, often about people or situations you'd never want, and fear of what they might mean about you.
“Pure O” and mental rituals
OCD that runs mostly on invisible compulsions: reviewing, analyzing, neutralizing or mentally checking.
Perinatal OCD
Intrusive thoughts about your baby's safety, often during pregnancy or after birth.