Download as PDF, PPTX
More Related Content
Similar to Module_1_Terminology.pdf terminology vvv
Module_1_Terminology.pdf terminology vvv
- 1.
- 2. 2 How to navigatethis presentation Key to module icons Return to interactive Table of Contents. Click any page to progress to the next page. Additional navigation can be found at the bottom of each slide in the Google Slide toolbar, e.g., use the arrows to move forward and back. Clicking on the button in Canvas will advance you to the next page in Canvas. Tips and Tricks Treatment Diagnosis / Bedside Diagnostics Geography Aetiology Key Clinical Features
- 3. Specific terms areused in dermatology to describe lesions and rashes. This terminology will be used extensively throughout the course, therefore knowledge of it is essential. Terminology Primary Lesions Secondary Features Shape Distribution 3 Specific terms are used in dermatology to describe lesions and rashes. This terminology will be used extensively throughout the course, therefore knowledge of it is essential.
- 4. Return to this pageat any time to navigate to any section or specific condition Primary Lesions Secondary Features Shape Distribution Scale Macule Patch Papule Plaque Nodule Pustule Ulcer Erosion Crust Annular Seborrheic Bulla Vesicle Wheal Excoriation Lichenification Umbilication Serpiginous Photodistributed Sporotrichoid After reviewing terminology and passing the quiz, you may move on to the next modules and complete them in any order you wish. 4 Interactive Table of Contents Terminology > Visit sections by clicking buttons below.
- 5. Section 1: PrimaryLesions Terminology 5
- 6. Primary Skin Lesions “Primarylesion” refers to the form or structure of an individual skin lesion. They are described by these nine terms. Macule Patch Papule Plaque Nodule Pustule Bulla Vesicle Wheal 6
- 7. PRIMARY LESIONS Macule A circumscribed discolourationthat is flat and less than 10 mm in diameter. There may be a change in colour or texture, but macules are not raised above the surface of the skin. Pityriasis versicolor (scaly) wikipedia.org Vitiligo wikipedia.org 7
- 8. PRIMARY LESIONS Patch A circumscribeddiscolouration that is flat and greater than 10 mm. It is essentially a large macule. There may be a change in colour or texture, but patches are not raised above the surface of the skin. Patches of vitiligo 8
- 9. PRIMARY LESIONS Papule A circumscribed elevationthat is solid and less than 10 mm in diameter. These are superficial, in contrast to a nodule. Other examples: scabies, papular pruritic eruption of HIV, insect bites Molluscum Neurofibromas in neurofibromatosis 9
- 10. PRIMARY LESIONS Plaque A circumscribedslightly raised elevation that is greater than 10 mm in diameter. In some skin conditions, such as psoriasis, several papules can coalesce into a plaque. Tinea corporis Psoriasis 10
- 11. PRIMARY LESIONS Nodule A firm,solid lesion that is palpable and usually arises from dermal or subcutaneous layers of the skin. A subcutaneous nodule does not always raise the surface of the skin but can still be felt on exam. Keloid Onchocercoma 11
- 12. PRIMARY LESIONS Vesicle A circumscribed elevatedlesion that is less than 10 mm in diameter and contains clear fluid. Vesicle (trauma or thermal) Others: varicella, herpes simplex virus 12
- 13. PRIMARY LESIONS Bulla A circumscribed elevatedlesion that is greater than 10 mm in diameter and contains clear fluid. A bulla is a large vesicle. l Bullous Impetigo 13
- 14. PRIMARY LESIONS Pustule A circumscribed elevationthat is less than 5 mm with yellow fluid (pus), usually containing neutrophils. Occlusive folliculitis Others: acne 14
- 15. PRIMARY LESIONS Wheal A transientcircumscribed papule or plaque, usually with erythema (redness) and peripheral pallor. Wheals change rapidly in size and shape due to edema in the upper dermis and are typically present for only a few hours. Urticaria (hives) 15
- 16. Section 2: SecondaryFeatures Terminology 16
- 17. Secondary Features Secondary featuresrefers to changes to a primary lesion, such as scale or crust. These changes may be part of the disease process or may be induced by external factors, such as scratching the skin. Scale Ulcer Erosion Crust Excoriation Lichenification Umbilication 17
- 18. SECONDARY FEATURES Scale Shedding ofthe top layer of skin (stratum corneum) which appears as dry flakes. In inflammatory conditions of the skin, such as psoriasis, scale is due to increased production of skin cells. Psoriasis plaque with dry scale 18
- 19. SECONDARY FEATURES Crust A collectionof dried serum, blood, or pus on the surface of skin. Papules with overlying crust 19
- 20. SECONDARY FEATURES Erosion A focalloss of superficial epidermis. Because erosions are superficial, they heal without scarring. Erosion 20
- 21. SECONDARY FEATURES Ulcer Focal lossof epidermis and some dermis that heals with scarring. Tropical ulcer 21
- 22. SECONDARY FEATURES Excoriation Erosions orabrasions of skin due to scratching. They are often linear in shape. Excoriations 22
- 23. SECONDARY FEATURES Lichenification Diffuse thickeningof epidermis with accentuation of skin lines with corrugated appearance. This develops in response to chronic rubbing or scratching of the skin. Lichenification in lichen simplex chronicus 23
- 24. SECONDARY FEATURES Umbilication This isa central dell or depression, most often on a papule. Umbilicated papules of molluscum 24
- 25.
- 26. Shape In addition toround, oval, and linear, the primary lesions of certain skin diseases have a characteristic shape that can be a clue to the diagnosis. Annular Serpiginous 26
- 27. SHAPE Annular Ring shaped plaque, usuallywith a raised margin. There is often central clearing, or normal appearing skin in the center of the lesion. Annular plaque in tinea corporis 27
- 28. SHAPE Serpiginous Snake-like or winding patternon the skin. Cutaneous larva migrans 28
- 29.
- 30. Distribution The distribution ofskin lesions refers to where they are located on the skin. Some skin diseases have a characteristic distribution, such as pityriasis versicolor that affects seborrheic (oily) parts of the skin. Seborrheic Photodistributed Sporotrichoid 30
- 31. DISTRIBUTION Seborrheic This is theoily parts of the skin such as the central face, mid chest, and central upper back. Pityriasis versicolor on the upper back 31
- 32. DISTRIBUTION Photodistributed Sun exposed areasof the skin, such as the face, upper chest, and dorsal forearms. Pellagra in sun-exposed parts of the skin 32
- 33. DISTRIBUTION Sporotrichoid Skin lesions, usually nodules,following the lymphatic drainage. It usually occurs on the limbs. Sporotrichoid spread 33
- 34. This course hasbeen created by: ⮚ Alexia P. Knapp, MD, MS, FAAD, CTropMed® ⮚ Karolyn Wanat, MD, FAAD, CTropMed® 34
- 35. End of Presentation Thankyou! 35