Pigmentary Diseases

Question 1

Melasma of pregnancy is known as

Answer 1

Chloasma

Question 2

Chik sign is seen in

Answer 2

Chikungunya

Question 3

Difference in freckles and lentigines

Answer 3

Melanocyte no. Is normal in freckles and raised in lentigines
Melanocyte activity is raised in freckles and normal in lentigines

Question 4

Peutz Jegher syndrome

Answer 4

Mucosal lentigines + GI polyps

Question 5

Cafe au lait should be how many to diagnose NF

Answer 5

More than equal to 6

Question 6

Naevus of Ota follows which nerve

Answer 6

Trigeminal nerve

Question 7

Naevus of ito follows which nerve

Answer 7

Lateral brachial nerve of arm

Posterior supraclavicular nerve

Question 8

Defect in chediak higashi syndrome

Answer 8

Phagolysosome fusion

Loss of function mutation of LYST

Question 9

Inheritance of chediak higashi

Answer 9

AR

Question 10

Inheritance of piebaldism

Answer 10

AD

Question 11

Piebaldism + SNHL is

Answer 11

Waardenburg syndrome

Question 12

Chemical present in bindi which causes leukoderma

Answer 12

Para tertiary butyl phenol (PTBP)

Question 13

Chemical present in rubber which causes leukoderma

Answer 13

Mono benzyl ether of hydroquinone (MBEH)