What is a narcotic by medical definition? By medical definition, narcotics are substances used to treat moderate to severe pain. In fact, the word ânarcoticâ is taken from the Greek word for âstuporâ. So, narcotic originally referred to substances that dull the senses and relieve pain.
The types of drugs that might be prescribed for sciatica pain include: 1  Anti-inflammatories. 2  Muscle relaxants. 3  Narcotics. Tricyclic antidepressants.  Anti-seizure medications.
In nine out of 10 cases, sciatica is caused by a displaced disk in the lower spine. The best medicine is often patience â with some stoicism mixed in â because the pain often goes away, even if the problem disk does not. Researchers have found that the pain usually improves within a month.