Addiction to painkillers among patients with headaches

"Not only can sustained medication overuse cause headache but it can result in tolerance and
addiction to drugs."


"Medication overuse headache
1.2.7 Be alert to the possibility of medication overuse headache in people whose
headache developed or worsened while they were taking the following drugs
for 3 months or more:
triptans, opioids, ergots or combination analgesic medications on 10 days per month
or more or
paracetamol, aspirin or an NSAID, either alone or in any combination, on 15 days
per month or more."


http://www.nice.org.uk/nicemedia/live/13901/60854/60854.pdf

http://www.nice.org.uk/nicemedia/live/13901/60853/60853.pdf