Intrusive and recurrent thoughts or obsessions which contribute to impulsive rituals or compulsions such as washing and checking. These are unwanted ideas that repeatedly well up in the mind of the person suffering from OCD. These thoughts produce a high degree of anxiety.

The most common of these are washing and checking. Other compulsive behaviours include repeating, hoarding, counting and re-arranging objects.

Transcranial Magnetic Stimulation is an FDA approved treatment has been shown to be a very effective for OCD.

Research has also shown that both Pharmacotherapy and Behavioural therapy can benefit sufferers of OCD.