Aching, throbbing, dull or migrainous head pain following use of certain medications, illicit drugs, or in the course of withdrawal.

Drugs known to cause headache include over-the-counter medications such as aspirin, acetaminophen, nonsteroidal anti-inflammatory drugs (NSAIDs), prescription medications such as nitrates, triptans, ergotamine, opioids (codeine, hydrocodone), and medications taken in combination.

Related Topic: Medication Overuse Headache