Defining SKIN lesions Flashcards
1
Q
What is a macule?
A
- flat
- often red
- <1cm
- well defined border
- arises from the epidermis
2
Q
What is a papule?
A
- raised and palpable lesion
- <5mm diameter
- well defined border
- typically not compressible
- arises from the dermis
3
Q
What is a patch?
A
- a larger macule
ie:
- flat
- often red
- > 1cm
- well defined border
- arises from the epidermis
4
Q
What is maculopapular?
A
- red area covered with small confluent bumps
5
Q
What is a nodule?
A
- a papule that is >5mm
ie:
- raised and palpable lesion
- > 5mm diameter
- well defined border
- typically not compressible
- arises from the dermis
6
Q
What is a plaque?
A
- a palpable lesion with a flat top
- > 1cm diameter
- well defined border
- not compressible
7
Q
What is a wheal?
A
- raised
- blanches
- compressible
- caused by oedema of the dermis
8
Q
What is a vesicle?
A
- a fluid filled lesion <5mm diameter
- raised
- arises from the epidermis
9
Q
What is a bulla?
A
- a vesicle >5mm diameter
- likely from the dermis
10
Q
What is a pustule?
A
- visible collection of pus in the skin <1cm diameter
11
Q
What is an abscess
A
- a pustule >1cm diameter
ie:
- visible collection of pus in the skin >1cm
12
Q
What is purpura?
A
- bleeding into the dermis
- multiple dark coloured spots, can be red or purple in colour
- can be macular or papular
13
Q
What is petechiae?
A
- purpura <2mm diameter
ie:
- bleeding into dermis
- multiple dark coloured spots, can be red or purple in colour
- can be macular or papular
14
Q
What is a haematoma?
A
- swelling from a large bleed in the skin
- often tender and palpable
15
Q
What is milia?
A
- tiny white spots
- contain keratin, occurs as a result of the blocked pilosebacious glands
16
Q
What is a papilloma?
A
- warty-like appearance
- tiny finger like projections from the skin surface
- typically from wart viruses )(HPV)
17
Q
What is an ulcer?
A
- a deep skin defect
- goes all the way through the epidermis and may or may not effect the dermis
18
Q
What is an erosion?
A
- a shallow skin defect
- affect the epidermis only
19
Q
What is a fissure?
A
- a split in the skin
- affects dermis and epidermis
20
Q
What is excoriation?
A
- scratch marks
21
Q
What is keloid?
A
- scar tissue that goes beyond the boundaries of the original injury
22
Q
What 7 types can derm diagnoses be split into?
A
INFECTION bacterial: - impetigo - cellulitis viral: - herpes simplex - chicken pox - warts - pityriasis rosea - viral rash "viral exanthem" ACNE PSORIASIS ECZEMA URTICARIA SUN-RELATED SKIN CANCERS DRUG-RELATED ERUPTIONS
