Urticaria Flashcards
Name the term that means “increased thickness of keratin layer”
Hyperkeratosis
Name the term that means “increased turnover of keratinocytes/persistence of keratin nuclei”
Parakeratosis
Name the term that means “increased thickness of epithelium”
Acanthosis
Define “papillomatosis” and name a condition it is present in
Irregular epithelial thickening
Acanthosis nigricans
Define “spongiosis”
Oedema between keratinocytes
In psoriasis, what is the basic pathology that is occuring?
Parakeratosis in the corneal layer
What is meant by the Koebner phenomenon?
Trauma to a site of the body can stimulate skin lesions in that particular area
Neutrophils are present in the corneal layer in psoriasis. True/False?
True
Unusual but true
What is Auspitz sign in psoriasis?
Bleeding spots when psoriasis scales are scraped off
Where does acne vulgaris tend to affect?
Sites of high sebaceous gland concn
face, neck, upper back, chest
How does sebum, produced by sebaceous glands, lead to acne?
Sebum builds up in the hair follicle, increasing pressure to cause rupture
What are comedones?
Keratin and sebum build up in hair follicles, producing whiteheads and blackheads
Rosacea is commoner in males. True/False?
False
Commoner in females
What are the facial features of rosacea?
Flushing
Visible blood vessels
Pustules
Thickened skin (rhinophyma)
List some triggers of rosacea
Alcohol
Sunlight
Spicy food
Stress
Which mites are often present in rosacea?
Demodex mites