Health encyclopaedia - Alphabetical Topic List健康百科全书-按字母顺序排列的主题清单
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Moles痣
Moles are small dark marks on the skin.痣是小暗马克对皮肤。 They are caused by cells in the skin that produce pigment (colour).他们所造成的细胞在皮肤产生色素（彩色） 。 Moles are usually brownish, although some may be darker or skin-coloured.痣通常是褐色，虽然有些人可能会较深或皮肤颜色。 Moles can be flat or raised, smooth or rough, and some have hair growing from them.痣可以单位或所提出的，平滑或粗糙，有的头发越来越多，从他们。 Moles are usually circular or oval in shape with a smooth edge.痣通常是圆形或椭圆形的形状与顺利的优势。
Some moles are present at birth.有些痣是目前在出生时。 These are called congenital melanonaevi.这些都是所谓的先天性melanonaevi 。 However, most moles develop during the first 20 years of life (and sometimes into the 30s and 40s).然而，大多数痣发展在头20年的生活（有时到30多岁和四十多岁） 。 They often develop if you spend a lot of time in the sun, and tend to appear on parts of the body that catch the most sunlight, such as your face.他们往往发展如果您花了很多时间，在阳光下，并往往出现在部分机构赶上最阳光，如你的脸。
Moles can start to look different over time and sometimes respond to hormonal changes, such as during pregnancy, adolescence and the menopause.痣可以开始看起来不同，随着时间的推移，有时回应荷尔蒙的变化，如在怀孕期间，青春期和更年期。 Some even disappear over time or fall off, often without you realising.有的甚至消失，随着时间的推移或脱落，往往没有您实现。
Seborrhoeic keratoses are moles that are common in older people who have spent a lot of time in the sun. seborrhoeic性角化病是痣是共同在老年人身上谁花了很多时间在阳光下。 The edge of the mole is quite faint and they’re usually raised from the surface of the skin.边缘的摩尔是相当微弱和theyâ € ™重新提出，通常从表面的皮肤。 They vary in colour from skin colour to orange and black.他们各有不同的颜色，从肤色，以橘色和黑色。
