Skincare Skin Conditions and Treatments 2

Question 1

Psoriasis is caused by which underlying mechanism?

Accepted Answer

An overactive immune response causing rapid skin cell turnover

Answer

Psoriasis is an autoimmune condition where the immune system accelerates skin cell production, causing thick, scaly plaques.

Question 2

Which treatment approach is commonly used for moderate-to-severe cystic acne that has not responded to topical treatments?

Accepted Answer

Oral isotretinoin (Accutane)

Answer

Oral isotretinoin is a powerful vitamin A derivative prescribed for severe cystic acne that reduces sebum production significantly.

Question 3

What is transepidermal water loss (TEWL)?

Accepted Answer

The evaporation of water from the skin through the epidermis into the environment

Answer

TEWL is the passive diffusion of water from the body through the epidermis to the environment, indicating skin barrier integrity.

Question 4

Contact dermatitis can be divided into which two main types?

Accepted Answer

Irritant and allergic

Answer

Contact dermatitis occurs as either irritant contact dermatitis (direct tissue damage) or allergic contact dermatitis (immune-mediated reaction).

Question 5

Which skin condition is characterized by autoimmune destruction of melanocytes, resulting in white patches?

Accepted Answer

Vitiligo

Answer

Vitiligo is an autoimmune condition where the immune system destroys melanocytes, causing depigmented white patches on the skin.

Skincare Practice Test