Thousands of people across Britain could get up to £748 a month for many mental health conditions.
The Department for Work and Pensions (DWP) official list includes more than 500 conditions that may qualify for support.
The payments are available to people living with a wide range of long-term health conditions, including many mental health disorders.
The DWP offers Personal Independence Payment (PIP) to help cover the extra costs of living with a long-term health condition or disability.
This includes a wide range of mental health conditions, meaning people living with anxiety, depression, schizophrenia and autism, among many others, could be entitled to the benefit.
PIP is made up of two separate components rather than a single payment.
The daily living element, which helps with the extra costs of everyday tasks, pays between £76.55 and £114.80 a week.
The mobility element, for those who need help getting around, is worth between £30.20 and £80.10 a week.
Claimants can receive one or both components at either the standard or enhanced rate. Those awarded the enhanced rate for both can receive up to £194.90 a week, or around £748 a month.
Others may receive a lower or mixed award depending on how their condition affects them. The benefit is available to people aged 16 up to State Pension age.
The DWP's website includes a lengthy catalogue of psychological and psychiatric conditions that may make someone eligible.
These encompass generalised anxiety disorder, panic disorder, social and specific phobias, agoraphobia, and PTSD, alongside obsessive-compulsive disorder and body dysmorphic disorder.
Mood-related conditions such as depressive disorder and bipolar affective disorder also feature, as do psychotic disorders including schizophrenia.
Neurodevelopmental conditions — among them autism, Asperger syndrome, ADHD, and learning disabilities including Down's syndrome and Fragile X syndrome — are likewise listed.
Eating disorders such as anorexia nervosa, bulimia nervosa, and those not otherwise specified appear on the register, together with dissociative disorders, substance misuse disorders, somatoform disorders, and factitious conditions including Munchausen syndrome.
Childhood psychiatric disorders, conduct disorder, and conditions such as bedwetting and faecal soiling are also recognised.
Crucially, receiving a diagnosis alone does not guarantee an award. The DWP bases its decisions on the extent to which a condition affects a person's ability to cope with routine activities and maintain independence on a day-to-day basis.
This means two individuals with the same condition could receive different levels of support — or one might qualify while the other does not — depending on how severely their daily life is affected and what assistance they require.
The DWP's register runs to more than 500 entries and also includes broader umbrella categories designed to capture conditions not specifically named.
This ensures that people whose particular diagnosis does not appear word for word may still be considered eligible, provided they can demonstrate a sufficient impact on their everyday functioning.
