4 курс / Дерматовенерология / derma summary

Skin morphology

Done by:Mohammed Al-FaKih

Primary

Def:

Lesson:

Def:

Lesson:

Lesson:

Papule

Elevated, solid lesion,

Size

Nodule

A circumscribed,

Plaque

فدصلا باب

is up to 5 mm in diameter,

elevated, solid lesion,

circumscribed,

زحلاو

Color varies, Papules may

More than 5 mm in

elevated,superfi

become confluent and

diameter, Large nodule

cial, solid lesion,

form plaques

is referred to as a

More than 5 mm

Eg:psoriasis and lichen planus

tumor deep dermal

in

diameter,

eg:leprosy

Often formed by

the

confluence

of papules

Macule:

circumscribed,

Patch :

A circumscribed, non-

discoloration that may be

elevated lesion, More

hyperpigmrnted

(brown,

than 5 mm diameter or

blue,red or hypopigmented

more 1cm

, Size of less than 5 mm

eg: white :vetiligo

brown :ptryasis

Vesicle:

circumscribedcollection

of

Bulla:

A circumscribed

Pustule

fluid, Less than 5 mm in

collection of fluid,

circumscribed

diameter

more than 5 mm in

collection.of

diameter

leukocytes,

Varies in size

Cyst

Circumscribed lesion with a

Wheal

Firm

edematous

plaque

wall and a lumen, The lumen

result from infiltration of

may contain fluid or solid

the dermis with fluid, Are

matter same vescle but has

transient

and may last

only

a

few

hours,

Diagnostic for Urticaria

Comedon

Specific for acne

vulgaris,

burrow

Primary lesion of scabies

Are two types:

Linear elevation of

epidermis

Lesson:

Def:

Lesson:

DEF:

Lession:

Crust

A collection of

pustule

Small elevation

dried exudates and

containing purulent

material secondary

cellular debris

for vesicle and

papule

Erosion

A

partial focal

loss

Ulcer:

A focal loss of

of

epidermis,

Do

epidermis and

not

penetrate

dermis, Ulcers

below

the

dermo-

usually heal with

epidermal junction,

scarring

Heal

without

scarring

Hyperkeratosi

An

area

of

Atrophy

Thinning of the

s:

thickened

statum

skin

corneum

Excoriation :

Anerosion

caused

Fissure

A linear

loss of

by

scratching,

epidermis

and

excoriations

are

dermis,

With

often

linear

sharply defined,

superficial

nearly

vertical

epidermis only

walls

عاقنلاا

Scale:

Flakes of epidermal

Lichenificatin

: An area of

cells

that

are

thickened

produced

by

epidermis induced

abnormal

by scratching, Skin

keratinization

lines are

accentuated