A – Z of Skin

Information for Skin, Hair and Nail Conditions

WHAT IS THE A-Z OF SKIN?

The A to Z of Skin information has been developed to help you understand more about common skin conditions and problems, and how these may be treated.

Both common and medical names have been included to help your search, as well as the names of medications and treatments. There are also a number of cosmetic topics which explain the latest treatments for cosmetic concerns related to the skin. Many College dermatologists have contributed to the information on this site.

The process has been overseen by a committee of dermatologists to ensure that the final versions are both accurate and user friendly. Particular thanks go to Dr Pam Brown, Dr Peter Berger, Dr Davin Lim, Dr Michelle Rodrigues, Dr Yin Vun, Conjoint Associate Prof Orli Wargon and Dr Eleni Yiasemides (Chair). The A to Z information is currently under development. Please check back on a regular basis for updates and the addition of new topics.

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  • Hand foot and mouth disease

    Hand foot and mouth disease is a common contagious viral illness that spreads from person to person.

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  • Hansen’s disease

    Hansen’s disease also known as Leprosy, is a chronic bacterial infection caused by the organism Mycobacterium leprae. It primarily affects the skin and the nerves. It may also affect mucous membranes (such as the nose) as well as eyes and testicles.

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  • Heat rash

    Heat rash also known as miliaria, is a group of skin conditions that arise from blockage of sweat ducts.

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  • Herpes gestationis

    Herpes gestationis also known as Pemphigoid gestationis (PG) is a relatively rare pregnancy dermatosis characterised by blisters.

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  • Hidradenitis suppurativa

    Hidradenitis suppurativa is a condition affecting apocrine sweat glands that are located mostly under the arms and in the groin and genital area. These glands become blocked and inflamed, and then swollen and painful.

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  • Hirsutism

    The term hirsutism refers to excessive hair production in both males and females. However, medically it is used to define increased hair growth in women. Hirsutism affects 5-10% of women.

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  • Hives

    Hives is a skin condition also known as Urticaria.  It produces an itchy rash that tends to come and go and can last for a variable period of time. The condition can be acute (lasting less than 6 weeks) or chronic (lasting longer than 6 weeks). Most cases of urticaria have no known cause.

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  • Hori’s naevus

    Horis naevus presents as benign (harmless) blue-grey to gray-brown patchy and spotty pigmentation on the prominence of the cheeks. The condition usually appears in adulthood. It is most common in middle-aged Asian women. 

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  • Hormonal acne

    Hormonal acne also known as adult acne, is acne that continues past the ages of 18 to 20 or starts in the early 20s in individuals who may not have had a previous problem with acne.

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  • Hot Comb Alopecia

    Hot comb alopecia also known as Central centrifugal cicatricial alopecia (CCCA) is a chronic and progressive type of scarring alopecia that results in permanent hair loss. CCCA most commonly starts in the centre of the scalp and, without treatment, expands over time causing an irreversible area of baldness. It is most commonly seen in middle-aged African women.

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  • Human papillomavirus

    Human papillomavirus also known as warts, are abnormal growths of the skin and mucosa caused by an infection with the human papillomavirus (HPV).

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  • Hutchinson’s melanotic freckle

    Hutchinson's melanotic freckle also known as lentigo maligna, is an early form of melanoma. In lentigo maligna the cancer cells are confined to the upper layer of the skin (epidermis).

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  • Hydroxychloroquine

    Hydroxychloroquine is an anti-malarial drug that is used to treat a wide variety of skin conditions. The way in which it works is unknown but it is understood to have anti-inflammatory effects.

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  • Hyperhidrosis

    Hyperhidrosis is the name given to excessive or uncontrollable sweating.

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