descriptions of lesions

34
Description of Lesions

Upload: oliyad-tashaaethiopia

Post on 21-Dec-2014

167 views

Category:

Health & Medicine


0 download

DESCRIPTION

 

TRANSCRIPT

Page 1: Descriptions of lesions

Description of Lesions

Page 2: Descriptions of lesions

“He who studies skin diseases and fails to study the lesion first will never learn dermatology.”

Siemens(1891-1969)

Page 3: Descriptions of lesions

Primary Lesions

Page 4: Descriptions of lesions

Primary Lesions

Macule

-flat normal surface size <0.5cm in diameter

-area of color different from the surrounding skin or mucous membrane

Page 5: Descriptions of lesions
Page 6: Descriptions of lesions

Patch

-similar to a macule but size >0.5cm

Page 7: Descriptions of lesions
Page 8: Descriptions of lesions

Papule

-a solid, elevated lesion < 0.5 cm in diameter.

Page 9: Descriptions of lesions
Page 10: Descriptions of lesions

Plaque

-solid plateau-like elevation

-width >> height diameter > 0.5 cm

Page 11: Descriptions of lesions
Page 12: Descriptions of lesions

Nodule

-a solid, round or ellipsoidal, palpable lesion that has a diameter > 0.5 cm.

-depth of involvement and/or substantive palpability

Page 13: Descriptions of lesions
Page 14: Descriptions of lesions

Vesicle

-a fluid filled cavity sized <0.5cm in diameter

Page 15: Descriptions of lesions
Page 16: Descriptions of lesions

Bulla/blister

-a fluid filled cavity size >0.5cm

Page 17: Descriptions of lesions
Page 18: Descriptions of lesions

Pustule

-a vesicle or a papule filled with pus

Page 19: Descriptions of lesions
Page 20: Descriptions of lesions

Cyst

-an encapsulated cavity or sac lined with a true epithelium that contains fluid or semisolid material (cells and cell products such as keratin)

Page 21: Descriptions of lesions

Lesions with size <0.5cm in ∅•Macule•Papule•vesicle•pustule

Summary to primary lesions

Page 22: Descriptions of lesions
Page 23: Descriptions of lesions

Secondary Lesions

Erosion

-loss of a portion or all of the viable epidermal or mucosal epithelium

-heals without scaring

Page 24: Descriptions of lesions
Page 25: Descriptions of lesions
Page 26: Descriptions of lesions

Ulcer

-full thickness loss of epidermis & some dermis,

-heals with scaring

Page 27: Descriptions of lesions
Page 28: Descriptions of lesions
Page 29: Descriptions of lesions

Atrophy

- depression of the surface due to thinning of the epidermis or dermis.

- there are often fine wrinkles & the blood vessels easily seen under the skin

Page 30: Descriptions of lesions
Page 31: Descriptions of lesions

Fissure

-linear split in the epidermis or dermis at an orifice (angle of the mouth or anus) over a joint or along a skin crease.

Page 32: Descriptions of lesions

Surface features

- Scale : dry/flaky surface due to abnormal stratum corneum with accumulation of or increased shedding of keratinocytes

- Crust : serum, blood or pus that has dried/ accumulated on the surface – dry exudate

- Excoriations : are surface excavations of epidermis that result from scratching

- Lichenification : thickening of the epidermis with increased skin markings due to persistent scratching.

Page 33: Descriptions of lesions
Page 34: Descriptions of lesions

THE END