You can apply for the Disability Support Pension (DSP) online through your myGov account linked to Centrelink, or contact Services Australia if you cannot claim online. You will need to provide information about your medical condition, treatment, work history, income, assets and identity, plus supporting medical evidence from your treating professionals. Services Australia may arrange a Job Capacity Assessment and a Disability Medical Assessment before deciding whether you meet the eligibility rules. Check the current requirements and claim steps at servicesaustralia.gov.au, as approval depends on your individual circumstances.