13.10.23 Dermatology

Eczema

    • Endogenous

      • Atopic

      • Nummular / Discoid

        • Coin-shaped lesions on legs/trunk

      • Pompholyx

        • Itching vesicles on fingers

      • Stasis

        • Sites of poor venous return (ankles)

      • Seborrhoeic

    • Exogenous

      • Irritant

      • Allergic

      • Photodermatitis

    • Secondary

      • Lichen simplex

        • Lichenification from rubbing

      • Neurodermatitis

        • Generalised dryness

      • Asteatosis

        • Crazy-paving, often in older people

      • Pompholyx

      • Infection

Rash with epidermal change

    • Lichen planus

    • Lichenified eczema

    • Guttate psoriasis

    • Pityriasis lichenoides

    • Seborrhoeic dermatitis

    • Pityriasis rosea

    • Pityriasis lichenoides

    • Pityriasis versicolor

    • Desquamating stage of generalised erythema

    • Localised lesions

      • Fungal infection

      • Lupus erythematosus (systemic or discoid)

      • Fixed drug eruption

Rashes arising in the dermis

    • Erythema

      • Multiforme

      • Induratum

      • Nodosum

    • Drug reaction

    • Vasculitis

    • Urticaria

Blisters and pustules

  • Widespread

      • Chicken pox

      • Dermatitis herpetiformis

      • Erythema multiforme with blisters

      • Pityriasis lichenoides varioliformis acuta

      • Pemphigoid

      • Pemphigus

    • Localised

      • Pompholyx

      • Pustular psoriasis

      • Bullous impetigo

      • Herpes simplex

      • Herpes zoster

      • Insect bite allergy

      • Bullous drug eruption

Acne

    • Acne vulgaris

    • Acne excoree

    • Infantile acne

    • Acne conglobata

    • Occupational

    • Rosacea

Lumps and bumps

    • Seborrhoeic keratosis

    • Basal cell carcinoma

    • Squamous cell carcinoma

    • Solar keratoses

    • Rare

      • Bowen's disease

      • Paget's disease of the nipple

      • Keratoacanthoma

    • Benign tumours

      • Dermatofibroma

      • Skin tag

      • Syringoma

      • Naevus sebaceous

      • Epidermoid cyst

    • Vascular lesions

      • Port wine stain

      • Cavernous haemangioma

      • Spider naevus

      • Campbell de Morgan spots

      • Pyogenic granuloma

Black spots

    • Benign moles

      • Acquired melanocytic naevi

        • Junctional naevi

        • Compound naevi

        • Intradermal naevi

        • Blue naevus

        • Spitz naevus

        • Halo naevus

        • Becker's naevus

        • Freckles

      • Congenital pigmented naevi

      • Dysplastic naevi

    • Melanoma

      • Superficial spreading

      • Lentigo maligna

      • Nodular

      • Acral

      • Amelanocytic

Manifestations of systemic disease

    • Lupus

    • Dermatomyositis

    • Systemic sclerosis

    • Lichen sclerosis

    • Erythema multiforme

    • Stevens-Johnson syndrome

    • Erythema annulare

    • Angiomas

    • Hypopigmentation

    • Hyperpigmentation

    • Malignant conditions

      • Mycosis fungoides

      • Poikiloderma

      • Parapsoriasis

    • GI conditions

      • Vitamin deficiencies

      • Pyoderma gangrenosum

      • Dermatitis herpetiformis

      • Peutz-Jeghers

      • Crohn's

      • Porphyria cutanea tarda

    • Porphyrias

    • Xanthomas

    • Amyloid

    • Sarcoidosis

    • Pregnancy

      • Polymorphic eruptions

      • Melasma

      • Pemphigoid gestationis

Bacterial disease

    • Infected eczema

    • Impetigo

      • Bullous

      • Non-bullous

    • Boils

    • Folliculitis

    • Ecthyma

    • Erysipelas

Viral disease

    • Herpes simplex

    • Herpes zoster

    • Molluscum contagiosum

    • HPV

    • Measles

    • Rubella

    • Erythema infectiosum (fifth disease - slapped cheek)

    • Roseola infantum

    • Gianotti-Crosti syndrome

    • Hand, foot and mouth disease

Fungal and yeast infections

    • Tinea pedis (athlete's foot)

    • Tinea corporis

    • Tinea versicolor

    • Tinea capitis

    • Ringworm

    • Candida

Insects

    • Cutaneous leishmaniasis

    • Oriental sore

    • Kala-azar

    • Onchocerciasis

    • Typhus

      • Human

      • Murine

    • Rocky mountain spotted fever

    • Rickettsial pox

    • Tick typhus

    • Scrub typhus

    • Relapsing fever

    • Lyme disease

    • Yellow fever

    • Dengue

    • Scabies

    • Demodex

    • Larva migrans

    • Pediculosts