Pain Medications
Pain medications (analgesics) are not all the same and each pain medication has its advantages, risks, and treatment uses. Learn more about pain medication types, treatment uses, and risks.
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The Special Topics Medical Dictionary P-R provides comprehensive, reliable definitions for specific medical topics. Whether you are interested in pain medications or radiation therapy, learn what medical terms mean, see images and get related information on various aspects of health and wellness.
Featured Article: Proximal
The term proximal means nearer to the center (trunk of the body) or to the point of attachment to the body. Learn more about the medical term proximal, the difference between proximal and peripheral, how to determine the proximal point. See more »
Premenstrual Syndrome In-Depth
Premenstrual syndrome refers to physical and mental symptoms that occur around a woman's period. Learn about premenstrual syndrome symptoms and treatment.
See more »Puberty And Adolescence
Puberty and adolescence refers to the period of sexual maturation and the period of transition between puberty and adulthood. Learn more about puberty and adolescence in girls and boys and the health concerns associated with these development stages.
See more »P.A.M.
P.A.M. is an abbreviation for "Potential Acuity Meter," and is an instrument used to examine the eyes. Learn more about P.A.M. uses, eye examinations, and other medical terms.
See more »Pacemaker
A pacemaker is a small, battery-operated electronic device which helps the heart beat regularly and at an appropriate rate. Learn more about pacemaker benefits, risks, and potential complications.
See more »Palpation
Palpation is a method of feeling with the hands during a physical examination. Learn more about palpation uses, examination procedure, and diagnosis.
See more »Pap Smear And Treatment
Abnormal pap smears do not always require special treatments but do require a follow up examination and diagnosis by your physician. Learn about abnormal pap smear results and treatment options.
See more »Pedicle
A pedicle is a stem or stalk of tissue that connects parts of the body to each other. Learn more about the pedicle’s anatomy, functions, and location in the body.
See more »Penis
The penis is the male organ used for urination and sexual intercourse and is made of spongy tissue and blood vessels. Learn more about the penis’s anatomy, functions, and potential conditions.
See more »Penis Care (uncircumcised)
Uncircumcised penis care is not necessary for infants but teenage boys must retract the foreskin and clean the penis thoroughly. Learn more about uncircumcised penis care in teenagers.
See more »Percussion
Percussion is a method of tapping body parts with fingers or small instruments to evaluate certain aspects of an organ. Learn more about percussion’s uses, procedure, and diagnosis.
See more »Percutaneously Inserted Central Catheter - Infants
Percutaneously inserted central catheter in infants is a plastic tube that is placed in a small blood vessel to allow IV fluids and medications to be given. Learn more about percutaneously inserted central catheters in infants procedures, benefits, and ri
See more »Periosteum
The periosteum is a fibrous sheath that covers bones and contains the blood vessels and nerves that provide nourishment and sensation to the bone. Learn more about the periosteum anatomy and functions.
See more »Peripheral
The term peripheral means "away from the center," and refers to the areas away from the center of the body or body part. Learn more about the term peripheral and other medical terms.
See more »Peripheral Arterial Line - Infants
Peripheral arterial lines for infants allow continuous monitoring of blood pressure and allow frequent blood samples to be drawn for testing. Learn about the peripheral arterial lines for infants procedure, benefits, and risks.
See more »Peripheral Intravenous Line - Infants
Peripheral intravenous line in infants is the insertion of a small, short, catheter into a vein to provide fluids and medications to infants. Learn more about the peripheral intravenous line in infants process, benefits, and risks.
See more »Peristalsis
Peristalsis is a series of coordinated, rhythmic muscle contractions that occur throughout the length of the gastrointestinal tract. Learn more about peristalsis functions, complications, and the organs involved.
See more »Pertussis - Vaccine
The pertussis vaccine protects against pertussis (whooping cough), a severe and potentially deadly childhood bacterial infection. Learn more about the pertussis vaccine, immunization schedule, benefits, and risks.
See more »Pesticides On Fruits And Vegetables
Pesticides on fruits and vegetables can have harmful effects and require extra cleaning before eating to reduce the risk of pesticide poisoning. Learn about pesticides on fruits and vegetables risks and preventative measures.
See more »Pets And The Immunocompromised Person
Pets and immunocompromised persons are often advised to give up their pets to avoid getting various diseases from the pets. Learn more about pets and immunocompromised people guidelines, risks, and preventative measures.
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