A suicide attempt is an attempt to die by suicide that results in survival. It may be referred to as a "failed" or "unsuccessful" suicide attempt, though these terms are discouraged by mental health professionals for implying that a suicide resulting in death is a successful and positive outcome. Epidemiology
In the United States, the National Institute of Mental Health reports there are 11 nonfatal suicide attempts for every suicide death. The American Association of Suicidology reports higher numbers, stating that there are 25 suicide attempts for every suicide completion. The ratio of suicide attempts to suicide death is about 25:1 in youths, compared to about 4:1 in elderly. A 2008 review found that nonfatal self-injury is more common in women, and a separate study from 2008/2009 found suicidal thoughts higher among females, as well as significant differences between genders for suicide planning and suicide attempts.Suicide attempts are more common among adolescents in developing countries than developed ones. A 12-month prevalence of suicide attempt in developing countries between 2003 and 2015 was reported as 17%. Parasuicide and self-injury
Without commonly agreed-upon operational definitions, some suicidology researchers regard many suicide attempts as parasuicide (para=near) or self harm behavior, rather than "true" suicide attempts, as in lacking suicidal intent. Methods
Some suicide methods have higher rates of lethality than others. The use of firearms results in death 90% of the time. Wrist-slashing has a much lower lethality rate, comparatively.
This release in iris pigment occurs as a result of the interaction of a flaccid iris with the zonular fibres.Exfoliation syndrome: Exfoliation syndrome is a classic cause of secondary open-angle glaucoma, a common symptom of exfoliation syndrome is a cloudy layer on the anterior lens capsule.Aphakic and pseudophakic glaucoma: Aphakic glaucoma is a common side-effect of cataract surgery which causes an increase in IOP.Corticosteroid-induced glaucoma: Corticosteroids is a risk factor for the development of secondary glaucoma, as there had been increased IOP observed as a drug side-effect.Post-traumatic glaucoma: Trauma to the eye is often observed to cause secondary glaucoma. The incidence is notably higher in populations with increased levels of physical activity.Ghost-cell glaucoma: Ruptured red blood cells will release haemoglobin in the form of Heinz bodies, which are potent in increasing the IOP level.Inflammatory glaucoma: The inflammatory reaction will affect the drainage of aqueous humour in the eye, causing an increase in IOP.Glaucoma associated with ocular tumours: Although each tumour subtype has its own mechanism in causing secondary glaucoma, the general cause is the restriction of the meshwork resulting in the obstruction of aqueous humour flow.Increased episcleral venous pressure: According to the Goldmann equation, the relationship between episcleral venous pressure (EVP) is directly proportional to the IOP. Therefore, an increase in the EVP will result in an increase in IOP. Neovascular glaucoma: As a consequence of neovascularisation, or the formation of new blood vessels and supporting connective structures, there is blockage of the anterior chamber angle. This leads to elevation of IOP causing neovascular glaucoma.