Chapter 11: Pigmentation Disorders
Terms in this set (9)
Hyperpigmentation - Chloasma
Chloasma, also known as liver spots. Increased pigmentation; from sun exposure or pigmentation from other causes. Melasma is a type of chloasma, which appears during pregnancy. The can be helped by exfoliation treatments or can be treated by a dermatologist.
An overproduction of pigment. Increased melanin causes excess pigment. Sun exposure, acne, medications, and post-inflammatory hyperpigmentation from skin damage can cause darkened pigmentation.
Hyperpigmentation - Melasma
A term for hyperpigmentation triggered by hormonal changes, often during pregnancy or with birth control use. Pregnancy mask is a condition where brown pigmentation appears on the face during pregnancy. it usually fades with time, but is worsened by sun exposure.
Hyperpigmentation - Nevus
Also known as birthmark. A malformation of the skin from abnormal pigmentation or dilated capillaries.
Hyperpigmentation - Stain
Abnormal brown or wine-colored skin discoloration with a circular or irregular shape. A port wine stain is a birthmark, which is a vascular type of nevus. Stains may also occur after certain diseases.
Hyperpigmentation - Tan
Exposure to the sun causes tanning, a change in pigmentation due to melanin production as a defense against UV radiation that damages the skin. A tan is basically visible skin and cell damage.
Hypopigmentation - Albinism
A rare genetic condition characterized by the lack of melanin pigment in the body including the skin, hair, and eyes. The person is at risk for skin cancer, is sensitive to light, and ages early without normal melanin protections. The technical term for albinism is congenital leukoderma or congenital hypopigmentation.
Hypopigmentation - Leukoderma
Loss of pigmentation; light, abnormal patches of depigmented skin; congenital, acquired due to immunological and post-inflammatory causes. Vitiligo and albinism and leukodermas.
Hypopigmentation - Vitiligo
A pigmentation disease characterized by white irregular patches of skin that are totally lacking pigment. The condition can worsen with time and sunlight. The disease can occur at any age and is believed to be an autoimmune disorder causing absence of melanocytes.
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