Category: P

  • Pigeon toes

    A condition in which the feet turn towards the inside when a person is standing upright. Abnormal posture in which the toes are turned inward, often associated with knock-knee. A slight irregularity in which the leg or foot is turned, causing the foot and toes to face inward. Although this situation is frequently observed in…

  • Pierre robin syndrome

    A combination of facial features including a small lower jaw and a cleft palate that exist at birth, causing breathing and feeding problems early in a child’s life. A congenital facial anomaly characterized by an unusually small jaw, cleft palate, downward displacement of the tongue, and absent gag reflex. Affected children may suffer episodes of…

  • Picornavirus

    A virus containing RNA, e.g. enteroa viruses and rhinoa viruses. Any of a group of small ribonucleic acid (RNA) viruses, including the coxsackie virus and rhinoviruses. One of a group of small RNA containing viruses (pico = small; hence pico-RNA-virus). The group includes Coxsackie viruses, echoviruses, polioviruses, and rhinoviruses. These infectious agents derive their name…

  • Picomole

    A unit of measurement of the amount of substance equal to one million millionth of a mole.  

  • Pick up

    To catch a disease. To get stronger or better.  

  • Pick

    To take away small pieces of something with the fingers or with a tool.  

  • Pia

    The delicate innermost membrane of the three which cover the brain.  

  • Phyto-photo dermatitis

    An acute skin reaction due to the combination of plant irritation and sunlight.  

  • Phytooestrogen

    A substance obtained from cereals, legumes and seeds which has a similar effect on the body as oestrogen, used increasingly as an alternative to hormone replacement therapy.  

  • Physostigmine

    An extract of the dried leaves of the vine that produces Calabar bean, which is toxic but may be used in the treatment of glaucoma and to counter the effects of anticholinergic drugs on the central nervous system. Parasympathomimetic drug used in the treatment of tetanus and myasthenia gravis. Adverse effects include bronchospasm, digestive upsets,…