How long does it take for drug eruption () patients to appear clinical manifestations after the initial use( )
A. 3 weeks days B、3 days
B. Minutes to 24 hours
C. 7 days
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The drug of choice for allergic diseases is( )
Antihistamines
B. Immunosuppressant
C. Adrenaline
D. Hormone
The main characteristic feature of lichen planus is( )
Auspitz sign
B. Wickham texture
C. Target-like erythema
D. Mother spot and child spot
The following descriptions of pityriasis rosea, which is incorrect( )
A. it is common among young and middle-aged people.
B. the long axis of the rash of the trunk is perpendicular to the skin pattern.
C. related to viral infection.
D. self-healing.
which of the following is incorrect about freckles( )
A. Genetic disease.
B. Can multiply and become darker with sun exposure.
C. Histopathological examination can show increase in the number of melanocytes. D laser can be used for its treatment.
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