<unk>  is more common in women, but men are more likely to exhibit violent and stalker-like behaviors. The core symptom of the disorder is that the sufferer holds an unshakable belief that another person is secretly in love with them. In some cases, the sufferer may believe several people at once are "secret admirers". Most commonly, the individual has delusions of being loved by an unattainable person who is usually an acquaintance or someone the person has never met. The sufferer may also experience other types of delusions concurrently with<unk> , such as delusions of reference, wherein the perceived admirer secretly communicates their love by subtle methods such as body posture, arrangement of household objects, colors, license plates on cars from specific states, and other seemingly innocuous acts (or, if the person is a public figure, through clues in the media). Some delusions may be extreme such as the conception, birth, and kidnapping of children that never existed. The delusional objects may be replaced by others over time, and some may be chronic in fixed forms. Denial is characteristic with this disorder as the patients do not accept the fact that their object of delusion may be married, unavailable, or uninterested. The phantom lover may also be imaginary or deceased.<unk>  has two forms: primary and secondary. Primary<unk>  is also commonly referred to as de Clerambault's syndrome and Old Maid's Insanity and it exists alone without comorbidities, has a sudden onset and a chronic outcome. The secondary form is found along with mental disorders like paranoid schizophrenia, often includes persecutory delusions, hallucinations, and grandiose ideas, and has a more gradual onset. Patients with a "fixed" condition are more seriously ill with constant delusions and are less responsive to treatment. These individuals are usually timid, dependent women that are often sexually inexperienced. In those with a more mild, recurrent condition, delusions are shorter-lived and the disorder can exist undetected by others for years. Problematic behaviors include actions like calling, sending letters and gifts, making unannounced house visits and other persistent stalking behaviors.
Erotomania
Dipsomania
Anotia
Dysmelia
Onychotillomania
Melanonychia
Coccydynia
Amaurosis fugax