Neurodegenerative Disease ManagementAhead of Print Plain Language Summary of PublicationOpen Access , , , , , , , , , , , , , , , & Abstract What is this summary about? This is a plain language summary of an article published in Alzheimer’s & Dementia. It looks at a type of test called a lumbar puncture (also known as spinal tap) used in people suspected of having Alzheimer’s disease or some other form of dementia. This summary focuses on how to do a lumbar puncture safely. Why is this important?