Being a single parent does not by itself qualify you for PIP or change the assessment rules; the decision is based on how a long-term health condition or disability affects specific daily living and mobility activities. Explain what you can and cannot do reliably, including how caring responsibilities affect tasks such as preparing food, washing, dressing, planning journeys and managing treatment. Evidence might include medical letters, prescription information, care plans and statements from people who see your difficulties, although you do not need to wait for a diagnosis before claiming. You can request reasonable adjustments, such as a home or telephone assessment, through the DWP, and check the latest guidance on GOV.UK.