Dermatology

Question 1

What is a macule?

Answer 1

A flat area of altered skin

Question 2

What is a patch?

Answer 2

A larger flat area of altered colour or texture

Question 3

What is a papule?

Answer 3

A solid raised lesion <0.5cm in diameter

Question 4

What is a nodule?

Answer 4

A solid raised lesion >0.5cm in diameter

Question 5

What is a plaque?

Answer 5

Palpable scaling raised lesion >0.5cm in diameter

Question 6

What is a vesicle?

Answer 6

Raised, clear fluid-filled lesion <0.5cm in diameter

Question 7

What is a bulla?

Answer 7

Raised, clear fluid-filled lesion>0.5cm in diameter

Question 8

What is a pustule?

Answer 8

Pus-containing lesion <0.5cm in diameter

Question 9

What is a wheal?

Answer 9

Transient raised lesion due to dermal oedema

Question 10

What is lichenification?

Answer 10

Well-defined roughening of the skin with accentuation of skin markings

Question 11

What is the difference between the hair growth in hirtuism and hypertrichosis?

Answer 11

In hirtuism the hair growth is androgen dependent, in hypertrichosis it is non-androgen dependent

Question 12

What is oncycholysis?

Answer 12

Separation of the distal end of the nail plate from the nail bed

Question 13

What is the main function of langerhans cells in the skin?

Answer 13

Present antigens and activate T-lymphocytes for immune protection

Question 14

What is the main function of merkel cells in the skin?

Answer 14

They contain specialised nerve endings for sensation

Question 15

What virus causes slapped cheek syndrome (erythema infectiosum)?

Answer 15

Parvovirus B19

Question 16

A maculocpapular rash beginning behind the ears and spreading to involve the trunk is associated with what condition?

Answer 16

Measles

Question 17

What are koplik spots?

Answer 17

Small white/grey spots that appear on mucous membrane of the mouth- associated with measles