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If the client with a headache rates the pain at a 3 on a 1-10 scale then the medication that the nurse must administer is : IbuprofenHow can the headaches be treated?Aspirin, acetaminophen, naproxen, diclofenac, and other aspirin-like analgesics can provide much relief of mild to moderate migraine attacks.A headache is a pain in the head or face that can be described as a pressure that's throbbing, constant, sharp or dull. Headaches can differ with respect to pain type, severity, location and frequency. Headaches are a common condition that most people experience NSAIDS or nonsteroidal anti-inflammatory drugs are the first treatment when it comes to migraines. These may include ibuprofen, which is has the brand names of Motrin and Advil; and naproxen, which is also known as Aleve.To know more about headache treatment, referhttps://brainly.com/question/14553869#SPJ4