Common Skin DiseasesCommon Skin Diseases

Dr M FeldmanDr M Feldman

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AcneAcne

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PsoriasisPsoriasis

PsoriasisPsoriasis

PsoriasisPsoriasis

Flexural psoriasisFlexural psoriasis

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Pityriasis RoseaPityriasis Rosea

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Pityriasis versicolorPityriasis versicolorPityrosporum orbiculare (Malassezia furfur).Pityrosporum orbiculare (Malassezia furfur).

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EczemaEczema

EczemaEczema

AtopicAtopic Irritant Contact Irritant Contact

dermatitis eg ringdermatitis eg ring

VaricoseVaricose NumnularNumnular

Nickel Nickel

Nickel dermatitis – Nickel dermatitis – a type of allergic a type of allergic contact dermatitiscontact dermatitis

Allergic contact – Allergic contact – patch test patch test

Type 4 sensitivityType 4 sensitivity 72 hours72 hours

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Urticaria - dermatographismUrticaria - dermatographism

Type 1 – prick Type 1 – prick tests immediatetests immediate

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Solar keratosisSolar keratosis Skin CancersSkin Cancers

Solar KeratosesSolar Keratoses• PremalignantPremalignant

• Sun exposed areasSun exposed areas

• Non pigmentedNon pigmented

• RougheningRoughening

Seek HelpSeek Help Treatment – liquid Treatment – liquid

nitrogennitrogen

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BCCBCC Basal Cell carcinoma (rodent ulcer) Basal Cell carcinoma (rodent ulcer)

• CommonCommon• Sun exposed areasSun exposed areas• Whipcord edgeWhipcord edge• Central ulcerationCentral ulceration• Locally invasive onlyLocally invasive only• Slow growingSlow growing• Danger near eyeDanger near eye

Treatment - excisionTreatment - excision

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Squamous cell carcinomaSquamous cell carcinomaSquamous Cell carcinomaSquamous Cell carcinoma

• Less commonLess common

• Poorly defined edgePoorly defined edge

• Persistent scaly patchPersistent scaly patch

• Not usually pigmentedNot usually pigmented

• Sun exposed areasSun exposed areas

• May be a nodularMay be a nodular

• May metastasise May metastasise

Treatment-excisionTreatment-excision

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MelanomaMelanoma Melanoma – incidence increasingMelanoma – incidence increasing

Family HistoryFamily History

Fair skinFair skin

Legs in womenLegs in women

Back in menBack in men

History of burning ( cf blistering )History of burning ( cf blistering )

MelanomaMelanoma MelanomaMelanoma

AsymmetryAsymmetry

Varied PigmentVaried Pigment

Change in shape or colour or sizeChange in shape or colour or size

Bleeding, ItchingBleeding, Itching

Satellite lesionsSatellite lesions

MelanomaMelanoma MelanomaMelanoma

Can spread easilyCan spread easily

Early excision can cureEarly excision can cure

Prognosis related to depthPrognosis related to depth

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Lichen PlanusLichen Planus

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Lichen SimplexLichen Simplex

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Dermatitis HerpetiformisDermatitis Herpetiformis

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PemphigoidPemphigoid

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PemphigusPemphigus

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Acne RosaceaAcne Rosacea

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SLESLE

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Herpes simplexHerpes simplex

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Herpes ZosterHerpes Zoster

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ImpetigoImpetigo

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MeaslesMeasles

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RubellaRubella

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ChickenPoxChickenPox

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Alopecia areataAlopecia areata

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VitiligoVitiligo

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Pityriasis AlbaPityriasis Alba

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ThrushThrush

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Granuloma annulareGranuloma annulare

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RingwormRingworm

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Necrobiosis lipoidicaNecrobiosis lipoidica

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Erythema nodosumErythema nodosum

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KeratocanthomaKeratocanthoma

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Pyogenic granulomaPyogenic granuloma

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Erythema multiformErythema multiform