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  • Haemoglobin - (Haemo-glo-bin)

    A haemoprotein composed of globin and haeme that gives red blood cells their characteristic colour; function is primarily to transport oxygen from the lungs to the body tissues

  • Hair follicles - (Hair-fa-lekels)

    Tubular cavities in the outermost layer of the skin, from which hair shafts grow

  • Halitosis - (hal-i-to-sis)

    Offensive breath

  • Hallucination - (hal-lu-ci-na-tion)

    An abnormal state in which a person has false impressions that are caused by disordered senses resulting from mental illness. Here, the person may actually see, hear or feel things that do not exist at all and this occurs due to a mental disorder.

  • Hammertoe - (Ham-mer –toe)

    A deformed toe which is bent in a claw-like arch

  • Hereditary - (he-red-i-tary)

    Occurring amongst members of a family

  • Histamine - (his-ta-mine)

    A chemical present in cells throughout the body that is released during an allergic reaction; histamine dilates blood vessels and makes the vessel walls abnormally permeable, its release causing itching, sneezing, increased mucous production, nasal congestion, skin rashes, besides a host of other symptoms

  • Hives - (hives)

    Another name for urticaria

  • Hypersomnia - (hi-per-som-nia)

    Sleep disorder characterised by excessive sleepiness or an inability to stay awake

  • Hypertension - (hy-per-ten-sion)

    A common disorder in which blood pressure remains abnormally high (a reading of 140/90 mm Hg or greater)