Acupuncture: A Chinese medical procedure that uses sharp thin needles inserted into certain body areas to relieve pain and cure diseases.
Acute Pain: A sudden and sharp pain caused by injury or illness that only lasts for a short amount of time.
Analgesics: A group of medications that are used to reduce or eliminate pain.
Anesthetic: A drug that is used during surgery to induce loss of feeling or consciousness.
Anti-inflammatory: A medication that is used for reducing inflammation.
Arthritis: A painful inflammatory disease this affects the joints, causing swelling and stiffness.
Bradycardia: A heartbeat that is slower than normal.
Central Pain: A pain that is caused by injury and affects the central nervous system.
Cervical Vertebrae: The first seven bones that is located at the top of the spinal column.
Chronic Pain: A pain that lingers for a prolonged period of time.

Delirium: A mental condition that causes people to suffer from disorientation, confusion and hallucinations.

Delta Receptors: Two subtypes of opioid receptors, delta 1 and delta 2, with numerous common features that are not found in mu or kappa receptors.
Drowsiness: The overwhelming desire to fall asleep during the day or at times that is inappropriate.
Dynorphin: A group of brain peptiles that are found in the central and peripheral systems that blocks pain.

FDA: The Food and Drug Administration which checks the safety of consumer products in the United States.

Hallucination: A mental occurrence that leaves a person with a distorted sense of reality.
Headache: A mild to severe pain in the head.
Hives: A red itchy rash on the skin.
Hypothermia: A body temperature that is lower than normal.
Ligaments: Fibrous and stretchy tissue that connects the bones in the body.
Miosis: The contraction of the eye’s pupil.
Nausea: The feeling of an upset stomach with a strong and sudden urge to vomit.
Nerve Block: An injection of pain medications that goes into and around a nerve.
Opionds: Synthetic medications that are used for treating mild to severe pain.
Orthostatic Hypotension: The sudden lowering of blood pressure that can cause a dizzy spell when a person stands up.
Overdose: The excessive use of a drug that is over the recommended dosage.
Pain: A feeling of physical discomfort.
Painkillers: Prescription medications that helps to reduce pain.
Pain Relief: The treatment method used to relieve pain.
Rotator Cuff: A group of muscles and tendons that supports and stabilizes the shoulder.
Sciatica: Pain that travels along the sciatic nerve, starting at the lower back and going down both legs.
Semi-synthetic Opiate/Opioid: A drug compound that is derived from opium.
Side Effects: The negative reactions that are caused by drugs.
Synthetic Opiate/Opioid: A drug compound that is not derived from opium.
Tachycardia: A heart rate that is faster than normal.
Tramadol: A narcotic medication that is used to treat mild to severe pain.
Trigger Point: A tender spot on the body of people with fibromyalgia that is painful to be touched.
Tumor: An abnormal growth or cyst that may be noncancerous (benign) or cancerous (malignant).
Urinary Retention: The inability to urinate.
Vomiting: The expelling of stomach content through the mouth.