Cutaneous Miscellaneous - Episode 22 - Board Booster

Introducing Cutaneous Miscellaneous Boards Booster. Each episode will feature high-yield board review questions pertaining to the board review topic discussed. Questions and answer explanations are written and edited by current dermatology residents/fellows and are sourced from key resources such as Bolognia Dermatology, Andrews’ Dermatology and Alikhan’s Review of Dermatology.

Question Title

* Topical minoxidil is able to stimulate hair growth due to its interaction with which of the following components?

SULT1A1

5-reductase

DHT

K+ channels

Question Title

* Which of the following is NOT a cause of telogen effluvium?

Pregnancy

Hyperthyroidism

Steroids

Oral contraceptives

Anticoagulants

Retinoids

Infection

Question Title

* Which of the following is consistent with a diagnosis of alopecia areata on histology?

Miniaturization of terminal hairs

Predominance of hair follicles in telogen

Intra- and perifollicular hemorrhage, pigmented hair casts, trichomalacia

Peri- and intrabulbar lymphocytic infiltrate

Decrease in the number of terminal hair follicles with a normal number of vellus follicles

Question Title

* A patient who presents with scarring alopecia of the scalp, hair loss of the axilla and groin, and follicular papules on the trunk has what condition?

Graham-Little syndrome

Temporal triangular alopecia

Addison’s disease

Lichen spinulosus

Alopecia universalis

Question Title

* Which of the following is consistent with a diagnosis of central centrifugal cicatricial alopecia?

Lichenoid-type interface dermatitis

Vacuolar-type interface dermatitis

Mucin deposits in the outer root sheath

Premature desquamation of the inner root sheath

Increase in vellus hairs and miniaturized hairs