Answer:
Alzheimer's disease- A deterioration of brain function causing short-term memory loss, confusion, and declining cognitive ability and language.
Glioma- A malignant brain tumor that grows quickly.
Concussion- An injury that may involve headaches, dizziness, and nausea. This is because trauma to the head causes the brain to bump against the skull.
Meningitis- A viral or bacterial infection accompanied by high fever, severe headaches, neck stiffness, nausea, and vomiting. Meningitis is caused when the brain and spinal cord membranes are inflamed.
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