Canadian Medical Guide > Diseases > Skin and Connective Tissue Diseases > Skin Diseases > Pigmentation Disorders Terms and Definitions
Pigmentation Disorders
Medical Definition: | |
Guide Notes: | do not restrict to skin despite category; do not confuse X ref INCONTINENTIA PIGMENTI ACHROMIANS with INCONTINENTIA PIGMENTI |
Also Called: | Ito Syndrome,Schamberg Disease |
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Argyria - A permanent ashen-gray discoloration of the skin, conjunctiva, and internal organs resulting from long-continued use of silver salts. (Dorland, 27th ed) |
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Cafe-au-Lait Spots - Light brown pigmented macules associated with NEUROFIBROMATOSIS and Albright's syndrome (see FIBROUS DYSPLASIA, POLYOSTOTIC). |
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Hyperpigmentation - Excessive pigmentation of the skin, usually as a result of increased epidermal or dermal melanin pigmentation, hypermelanosis. Hyperpigmentation can be localized or generalized. The condition may arise from exposure to light, chemicals or other substances, or from a primary metabolic imbalance. |
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Hypopigmentation - A condition caused by a deficiency or a loss of melanin pigmentation in the epidermis, also known as hypomelanosis. Hypopigmentation can be localized or generalized, and may result from genetic defects, trauma, inflammation, or infections. |
Pigmentation Disorders Medical Definitions and Terms
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