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Search Term: Scalp

Specific conditions involving the Scalp

Abscess Kerion, Dissecting cellulitis scalp, Acne keloidalis nuchae, Infected epidermoid cyst,Perifolliculitis capitis abscedens et suffodiens

Annular  Elastolytic granuloma,Neonatal lupus

Blisters  Brunsting-Perry pemphigoid

Congenital abscence   Aplasia cutis congenita

Crusts  Bullous impetigo,Pemphigus vegetans,Tinea capitis

Erosions  Pemphigus

Folds  Cutis verticis gyrata

Nodules   Sebaceous or Pilar cysts,Nevus,Dermoid cyst(Infancy),Encephalocoele,Proliferating trichelemal cyst,Cylindroma,Meningioma,Metastases,Angiosarcoma


Pigmented  Nevus en cocarde,Sun damage(lentigo maligna)

Plaque    Nevus sebaceous

Pruritus    Nits,seborrhoeic dermatitis,psoriasis,contact dermatitis

Pustules    Bacterial folliculitis,Acne necrotica miliaris(Tycoon scalp),Eosinophilic pustular folliculitis(Ofugi's disease),Erosive pustular dermatosis of the scalp, Tinea capitis

Receding frontal scalp   Frontal fibrosing alopecia

Red scaly   Seborrhoeic dermatitis,Atopic dermatitis,Psoriasis,Discoid lupus, Tinea capitis,Contact dermatitis,Darier's disease,rarely Langerhans cell histiocytosis,T cell lymphoma

Scaly     Cradle cap,Psoriasis,Seborrhoeic dermatitis,Pityriasis amianticea ,Tinea capitis

Swelling (boggy)   Kerion,Dissecting cellulitis of the scalp

Vascular   Angiosarcoma

Scalp Hair Loss

Generalised   Androgenetic alopecia,Telogen effluvium,Anagen effluvium(chemotherapy),Hair shaft defect especially in children,Drug induced hair loss(Isotretinoin,etretinate,lithium,anticoagulants,anticonvulsants,beta blockers),Endocrine abnormalities particularly hypothyroidism,polycystic ovaries,adrenal tumours,secondary syphilis.

Localised  Bacterial folliculitis,Tinea capitis,alopecia areata,alopecia neoplastica,Discoid lupus erythematosus,Lichen planopilaris,frontal fibrosing alopecia,folliculitis decalvans,Dissecting cellulitis of the scalp,Tufted folliculitis,Morphea (En coup de sabre linear),Aplasia cutis congenita,Trichotillomania,Traction alopecia

Localised hair loss has three common possibilities,alopecia areata,tinea capitis and trichotillomania.In alopecia areata the area of hair loss is complete,the involved area is smoothe and the hairs may be broken at the edges.The bald area is not inflammed.In tinea capitis the area is never completely bare,the hairs are broken,there may be scale on the surface and signs of scalp inflammation.In trichotillomania the hairs may be broken and the pattern of loss is unusual.The scalp may show inflammation around recently traumatically removed hairs.

Management-Take scrapings if scaly for fungal culture and include a few hairs.Do a hairpull test to see if the hairs around the bare area come out from the base with a telogen bulb on the end,a feature typical of alopecia areata.

Rare causes-Incontinentia pigmenti,nevus sebaceous,post tick bite,follicular mucinosis,Ofugi' disease,localised morphea,aplasia cutis,post herpes zoster,meningocoele,

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