content of the delusions, to wit, the Diagnostic and Statistical Manual of Mental Disorders (DSM) enumerates seven types: Erotomanic type (erotomania): delusion that another person, often a prominent figure, is in love with the individual. The individual may breach the law as they try to obsessively make contact with the desired person. Grandiose type (megalomania): delusion of inflated worth, power, knowledge, identity or believing oneself to be a famous person, claiming the actual person is an impostor or an impersonator. Jealous type: delusion that the individual's sexual partner is unfaithful when it is untrue. The patient may follow the partner, check text messages, emails, phone calls etc. in an attempt to find "evidence" of the infidelity. Persecutory type: This delusion is a common subtype. It includes the belief that the person (or someone to whom the person is close) is being malevolently treated in some way. The patient may believe that they have been drugged, spied upon, harmed, harassed and so on and may seek "justice" by making reports, taking action or even acting violently. Somatic type: delusions that the person has some physical defect or general medical condition Mixed type: delusions with characteristics of more than one of the above types but with no one theme predominating. Unspecified type: delusions that cannot be clearly determined or characterized in any of the categories in the specific types. Signs and symptoms The following can indicate a delusion: An individual expresses an idea or belief with unusual persistence or force, even when evidence suggests the contrary. That idea appears to have an undue influence on the person's life, and the way of life is often altered to an inexplicable extent. Despite their profound conviction, there is often a quality of secretiveness or suspicion when the person is questioned about it. The individual tends to be humorless and oversensitive, especially about the belief. There is a quality of centrality: no matter how unlikely it is that these strange things are happening to the person, they accept them relatively unquestioningly. An attempt to contradict the belief is likely to arouse an inappropriately strong emotional reaction, often with irritability and hostility. They will not accept any other opinions. The belief is, at the least, unlikely, and out of keeping with the individual's social, cultural, and religious background. The person is emotionally over-invested in the idea and it overwhelms other elements of their psyche. The delusion,