文档介绍：1
PSORIASIS
Common, chronic, recurrent, inflammatory disease of skin
2. Round, circumscribed, erythematous, dry, s -- bleeding point
phenomenon
(Auspitz sign)
Clinical Manifestation (4 types)
10
-- whole body involved, scalp, extensive side of four extremities, lumbosacral area, nails, even balabus
Other features of psoriasis vulgaris
11
-- symmetry, multiform: psoriasis guttata, nummular, petal-like, nail involved, bunch-like hair on scalp lesions
-- itching in various severity
Other features of psoriasis vulgaris
12
图例
13
Ps. knee
14
Ps. scalp
15
Flexural Ps.
16
Rupioid Ps.
17
Pityriasis amiantacea
18
Psoriatic pitting: onycholysis and salmon patch
19
Subungual hyperkeratosis
20
-- progressive phase: lesions increasing, enlarging, bright red, thin scales, red halo, isomorphism reaction is usually encountered
-- steady phase: no new eruption, thick scales
-- regressive phase: lesions regressing, color lighting, number reducing, white halo or pigmentation
Chronic course with 3 phases:
inconstant
21
Koebner reaction (isomorphism): psoriatic lesions appear on the normal skin of patients
with psoriasis
after injured or
scratched.
Three Special Phenomena
22
2. Auspitz sign (bleeding point phenomenon): There is pinpoint bleeding when a psoriatic scale is forcibly removed. This occurs only in psoriasis. It occurs because of the severe thinning of the epidermis over the tips of the dermal papillae.
Three Special Phenomena
23
3. Woronoff ring is concentric blanching of the erythematous skin at or near the periphery of a healing psoriatic plaque.
Three Special Phenomena
24
Youth
2. Streptococcus infection, tonsillitis, anti-streptolysin “O” test ↑
3. Acute onset, developing fast, drop-like papules or maculopapules of - cm in size,
4. Easily regress after properly treated
Acute guttate psoriasis
25
Guttate psoriasis.
26
Generalized Psoriasis Pustulosa (Von Zumbusch): most severe type, r