Skin Lesions

Question 1

PRIMARY LESIONS

Answer 1

o Macule
o Patch
o Papule
o Plaque
o Pustule
o Vesicle
o Bulla
o Nodule
o Cyst, Tumor

Question 2

SECONDARY LESIONS

Answer 2

o Scale
o Crust
o Excoriation
o Fissure
o Erosion
o Ulcer
o Lichenification
o Atrophy
o Telangiectasia

Question 3

Macule

Answer 3

Spot, 1cm circumscribed, not palpabe, not elevated, hypo/hyper pigmented, erythematous

Cafe au lait spot, Mongolian spots

Question 4

papule

Answer 4

A bump, palpable, elevated, 5mm in diameter, maybe pigmented/erythematous/flesh-toned

Elevated nevus (mole)

Question 5

Nodule

Answer 5

lesion similar to papule, diameter- 5mm to 2cm may have significant palpable dermal component,

Ex: fibroma, xanthoma, intradermal nevi

Question 6

TUmor

Answer 6

any mass/lesion larger than lesion larger than nodule, malignant or benign

Question 7

Wheal

Answer 7

An elevation in the skin, smooth muscle, sloping borders, light pink, acute edema may appear and disappear in hours. 3mm to 20cm

Mosquito bite

Question 8

Vesicle

Answer 8

A small blister (upto 5 mm) fluid collection maybe subcorneal, intraepidermal, subepidermal. HSV

Question 9

Bulla

Answer 9

blister larger than 5mm at various levels

Pemphigus, pemphigoid

Question 10

Pustule

Answer 10

al elevated well-circumscribed lesion with purulent exudate- Acne vulgaris

Question 11

BURROW

Answer 11

Linear lesion produced by infestation by the

parasites of the skin and formation of tunnels

Question 12

TELANGIECTASIA

Answer 12

▪ Blanchable dilated blood vessels
▪ Is the permanent dilatation of superficial blood
vessels in the skin and may occur as isolated
phenomena or as a part of a generalized
disorder, such as ataxia-telangiectasia.

Question 13

Icthiyosis Vulgaris

Answer 13

Fish like scales on back of legs

Question 14

TINEA VERSICOLOR (FINE SCALING)

Answer 14

▪ These are also different types of scales Fine
scaling for Tinea Versicolor which is a fungal
infection. Sometimes it’s also called Pityriasis
Versicolor.
▪ Sometimes it can be hypopigmented meaning
its white color! Or Hyperpigmented it can be
brown, especially on white people.
▪ So again they are topped with very fine
scales.

Question 15

SCALING IN SHEETS (DESQUAMATION)

Answer 15

▪ Scarlet fever (hands and feet)

Question 16

STAPHYLOCOCCAL SCALDED SKIN SYNDROME

Answer 16

Scaling can also be appreciated in the staphylococcal
scalded skink syndrome, there is the pealing of the skin
because of the excess toxins produced by the bacteria
which is staphylococcal.

Question 17

CRUST

Answer 17

Dried exudate of body fluids (Blood: Hemorrhagic
crust/Serous fluid: Yellow crust)
▪ Which might be either yellow/red

Question 18

Tinea capitis- (Crust)

Answer 18

fungal infection

Question 19

Impetigo-

Answer 19

bacterial infection (Eg: S. aureus golden-yellow crust very common among children
and seen under the nose or around the periorbital
area)

Question 20

EROSION

Answer 20

▪ A focal loss of epidermis
▪ Erosions do not penetrate below the dermoepidermal
junction and therefore heal without scarring
▪ Eg:-tinea pedis, candidiasis, eczematous disease,
herpes simplex

Question 21

ULCER

Answer 21

▪ A focal loss of epidermis and/or dermis
▪ Scarring depends on the depth of the ulcer
▪ Eg: chancroid, pyoderma gangrenosum,
decubitus

Question 22

FISSURE

Answer 22

▪ It is linear loss of continuity of skin due to
excessive tension, also goes down to the dermis.
▪ Eg:
o eczema (fingertips)
o intertrigo

Question 23

SCAR

Answer 23

▪ It is replacement of normal skin by fibrous tissue in the
process of healing of damaged skin
▪ Scars are of two types- hypertrophic skin and atrophic
▪ Eg:
o acne
o keloid
o herpes zoster
Burn

Question 24

. ATROPHY

Answer 24

▪ It is reduction in size and number of skin cells
▪ It may be limited to epidermis, dermis, or
subcutaneous tissue.
▪ Eg: -leprosy, atrophoderma, lipoatrophy

Question 25

LICHENIFICATION

Answer 25

▪ Repeated rubbing of skin results in thickening
and hyperpigmentation of skin
▪ The skin markings become prominent
▪ Eg:- Lichen simplex chronicus, Atopic dermatitis
(Skin asthma)