Melanocyte Biology — MCQs

Replacing alanine by which amino acid, will increase UV absorbance of protein at 280 nm wavelength?

A skin biopsy shows 'tadpole' appearance of melanocytes. Which histological pattern would confirm Spitz nevus?

Identify the condition in the image

A 50-year-old man with Fitzpatrick skin type V desires treatment for melasma. He was previously treated with triple combination cream with partial response. What would be the most evidence-based next step considering safety and efficacy?

What is the most common association with Acanthosis nigricans?

An increased incidence of vitiligo is found in association with which of the following conditions?

Fine reticular pigmentation with palmar pits is seen in which of the following conditions?

A child presents with a 2x2 cm depigmented macule with irregular margins over the forehead and glabella. There is a white forelock over the forehead since birth. What is the most likely diagnosis?

A 21-year-old lady on oral contraceptive pills presents with light brown pigmentation of the malar eminences. What is the likely diagnosis?

Idiopathic guttate hypomelanosis usually occurs over which area of the body?