Dermatology Revision
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Transcript of Dermatology Revision
Clinical dermatology
Carmen I Farid. MD.
Herpes Zoster
Vesicles on erythematous base
Healing by either :-Normal skin - posteruptive hyperpigmentaion
Psoriasis Well defined dusky red plaques with silvery white lamellated scales
It may shows +ve auspitz sign+ve kobner’s sign
Possible sites : Extensor aspect of limbs Scalp Back
The specific lesion on the nail is Oil spots
Mucous membrane involvement is evident in Erythrodermic psoriasis
Causes of silvery lips :1- DLE2- Lichen planus 3- psoriasis
Planter hyperkeratosis
DDLichen planus Psoriasis T. Rubra T. Pedis
Kobner’s Phenomena
Possible questions
Definition
Lesions that shows Kobner’s phenomena
Ptyriasis Rosea
Herald patch
Lichen planus
Hypertrophic type
On the chin of Tibia
Glistening surface
Treatment Intrlesional corticosteroids
Lichen planus on the hand
Well defined , glistening , wickham’s striae
DDwarts ( rough mamilated surface )
Urticaria
Weals , erythema , elevated
Erythema Multiform
Target lesions Indicative for erythema multiform
Sever Inflammatory Acne Vulgaris
Indication for systemic retinoids
Post acne scars Atrophic in nature
Alopecia areata
Alopecia areata
Exclamation mark
! Means > progressive Alopecia
Erythrasma
Woods light
Favus
Causative organismTrichophyton schoenleinii
Diagnostic lesion Scutulum ( it is crust )
Vesiculo bullous lesions of infant sole
Toe web maceration
DD of Vesiculo bullous lesions of infant sole (4)1- T. paedis 2- Eczema 3- Infantile scabies 4- dermatolysis bullous
T. Cruris
Crural lesions 1- Inverted psoriasis 2- Erythrasma 3- Monilial 4- intertrigo 5- T. cruris
T. Cercinata
Condyloma accuminata
Herpes zoster
Koebner’s
Herpes simplex
Herpes simplex
Bullous impetigo
impetigo
impetigo
Ichthyosis vulgaris
Vitiligo
T. cercinata
Impetigo
Molluscum contagiusum
Verruca plana
Normal Skin
Spongiosis
Bullae
Vesicle
Suprabasal acantholysis
Subepidermal separation
Alopecia areata
Black dot (t. Capitis)
t. Capitis
Ecthyma
Erythrasma
Herpes Zoster
Herpes Zoster
Herpes Simplex
Lichen planus
Molluscum contagiusum
Parakeratosis
+ RBCs on surface = bleeding
Suprabasal acantholysis
T. Cruris
Ptyriasis versicolour
Hypopigmented type
Ichthyosis vulgaris
Ichthyosis vulgaris
Ichthyosis vulgaris
Verruca vulgaris
Verruca plana
Verruca vulgaris
Tinea circinata
Scabies (tunnels)
Contact dermatitis
Contact dermatitis
Atopic dermatitis
Atopic dermatitis
Contact dermatitis
Onychomycosis
Onychomycosis
Pemphigus vulgaris
Pemphigus vulgaris +
Crustations
Bulla spreading test
Ptyriasis versicolour
Hypopigmented type
Ptyriasis versicolour
Hypopigmented type
Ptyriasis Rubra Pilaris
-Follicular hyperkeratosis-Erythema -Scaly patch on the trunk-Scaly scalp -Palm and Sole keratoderma -Nail dystrophy
Leprosy (LL)
Leprosy (LL)
Xeroderma pigmentosum
Xeroderma pigmentosum
Favus