Informed consent and mental health, mainly in Spain, EU

Introduction: Lawfully given, informed or valid consent is considered by Spanish jurisprudence a fundamental right and entails important repercussions. Method: Critical and theoretical examination of the matter, with special emphasis on the case of the most vulnerable people and those who require involuntary outpatient psychiatric treatment (IOT). Results: Valid informed consent must fulfil the requirements of capacitation, willingness, information and understanding. Timely knowledge and agreement regarding by whom and how this consent must be granted are important in biomedicine and psychology in general, as well as in the specialities of psychiatry and clinical psychology in particular. It is also important to ensure valid consent for any psychotherapy, as it generally also occurs in the case of psychopharmacological treatments. This article will revise the so-named “sliding scale” to determine mental degree of competence. This concept is especially important in order to consider whether a supposed valid consent is appropriate in vulnerable people. We will talk about living will and severe mental illness concerning valid consent. The current state of psychiatric involuntary outpatient treatment in Spain will be mentioned as well as the wills of legally incapacitated individuals, elderly people or when the carer, either an individual or institution, is the main beneficiary. Conclusions: Valid consent is necessary in every biomedical or sanitary action in general. The matter is potentially controversial if wrongful influences bear upon elderly people, incapacitated individuals and others. Keywords: Informed consent; Valid consent; Spain; Will; Severe mental illnes