0:00 So in this video, we're going to talk about ways to describe skin lesions. 0:11 Let's begin with a macule. 0:12 A macule is described as a flat circumscribed alteration in skin color. 0:19 An example of a macule is a freckle. 0:22 A papule is a circumscribed palpable elevation, less than 5 millimeters in 0:29 diameter. 0:30 An example of this is a mole. 0:34 The one up from a papule is known as a nodule. 0:37 A nodule is a circumscribed palpable elevation greater than 5 millimeters in 0:42 diameter. 0:43 An example of a nodule is a wart. 0:46 If the lesion contains fluid, this can be referred to as a vesicle, as long as 0:51 it is 0:51 a small collection of fluid below the dermis, and it's less than 5 millimeters 0:57 in diameter. 0:59 An example of this is a blister caused by a human simplex virus. 1:03 If the fluid is greater, if the blister you can say is greater than 5 mill 1:09 imeters, it 1:09 can be referred to as a bulla. 1:11 A bulla is a large collection of fluid below the epidermis, greater than 5 mill 1:17 imeters. 1:18 An example of this is a burned blister. 1:21 Remember that a vesicle and a bulla are a collection of fluid below the epider 1:28 mis. 1:28 A pustule is pus. 1:32 Pustule is a visible collection of pus. 1:36 A pustule can be an acne, for example. 1:40 A lesion can also contain fluid within the dermis layer, not the epidermis but 1:44 the dermis, 1:45 and this is known as a wheel. 1:48 So a wheel is an area of dermal edema. 1:50 An example of this, a wheel condition is known as hives, which is an allergic 1:58 reaction. 1:59 A plaque is a palpable raised flat disc shaped lesion, and it's often solid. 2:08 An example of a plaque lesion can be seen as in psoriasis. 2:15 If the lesion, skin lesion looks crusty, we can use the term crust. 2:19 A crust is defined as dried serum and exudate. 2:23 An example of crust lesion is we can see an impotigo, impotigo residues. 2:30 Scales can also be used. 2:31 Scales is defined as an accumulation of excess keratin. 2:35 This can be seen in dandruff, dandruff is an example of scales. 2:42 Finally, a term that we should be all familiar with is ulcer. 2:50 And ulcers can be found in the skin, in the gut, because these ulcers occur on 2:56 epithelial 2:57 cells. 2:58 An ulcer is described as a circumscribed loss of tissue. 3:03 An example is a pressure ulcer. 3:07 So those are some terminologies or terms used to describe lesions. 3:14 Again, macule, papule, nodule, pustule, wheel, plaque, crust, scale, and ulcer. 3:28 So that was it for this video, ways to, terms used to describe skin lesions. 3:33 Next, we will look at some common skin disorders and hopefully incorporate some 3:39 of these terms 3:40 to describe the common skin disorders. 3:43 Thanks for watching.
