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A-Z OF SKIN
Your guide to skin, hair and nail conditions
Search our A to Z of Skin to find out more about common skin conditions and problems, their symptoms, causes and how they are diagnosed and treated. You can search by both common and medical names, or by medicine or treatment name.
Both common and medical names have been included to help your search, as well as the names of medications and treatments. There are also a number of cosmetic topics which explain the latest treatments for cosmetic concerns related to the skin. Our thanks go to the many College dermatologists have contributed to the information on this site.
The information provided in the A-Z of Skin is a general guide only and does not replace individual medical advice. Please speak to your doctor for advice about your situation. The ACD is not liable for any consequences arising from relying on this information.
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- Abobotulinumtoxin A
- Acanthosis Nigricans
- Acitretin
- Acne
- Acne Keloidalis Nuchae (AKN)
- Acne Scars (Acne Scarring)
- Acne Vulgaris
- Acquired Ichthyosis
- Acquired Naevus of Ota-like Macules (ABNOM)
- Acrochordons
- Actinic Keratoses
- Acute Febrile Neutrophilic Dermatosis
- Acute Generalised Exanthematous Pustulosis
- Adenoma Sebaceum
- Adult Acne
- Age warts
- Ageing Skin
- Allergic Contact Dermatitis (ACD)
- Allergy Patch Testing
- Alopecia Areata
- Alopecia mucinosa
- Alpha-galactosidase A deficiency
- Amyloidosis
- Anderson-Fabry disease
- Androgenetic Alopecia (in men)
- Androgenetic alopecia (in women)
- Anetoderma
- Angioectasias
- Angiofibroma
- Angiokeratoma corporis diffusum
- Angular Cheilitis
- Anti-wrinkle injections or treatments
- Aphthous Ulcers
- Asteatosis
- Athlete’s Foot
- Atopic Dermatitis
- Atopic eczema
- Atopic Eruption of Pregnancy
- Atopic winter feet
- Atypical Mycobacterial Infection (ATM)
- Axillary Hyperhidrosis
- Azathioprine
- Balanitis & Balano-posthitis
- Barber’s itch
- Basal Cell Carcinoma (BCC)
- Becker’s Naevus
- Benign lymphocytic infiltration of the skin
- Biologic Treatments Used in Dermatology
- Biopsy of the Skin
- Blastomycosis
- Bowen’s Disease
- Brachioradial Pruritus
- Broken blood vessels or capillaries
- Brown warts
- Bullous Pemphigoid
- Café-au-lait Macules
- Calcific Uraemic Arteriolopathy
- Calciphylaxis
- Campbell de Morgan spots
- Canker sores
- Capillaritis
- Capillary malformation
- Cellulite
- Central Centrifugal Cicatricial Alopecia (CCCA)
- Cheek Rejuvenation
- Cheilitis granulomatosa
- Chemical peel
- Cherry Angiomas
- Chilblains
- Childhood Bullous Pemphigoid
- Chloasma
- Cholestasis of pregnancy
- Chondrodermatitis Nodularis Helicis
- Chromoblastomycosis
- Chromomycosis
- Chronic Actinic Dermatitis (CAD)
- Chronic Bullous Dermatosis of Childhood
- Chronic palmoplantar pustular psoriasis
- Cladosporiosis
- Comedonal Naevus
- Compensatory Hyperhidrosis
- Congenital Melanocytic Naevi
- Contact Allergy
- Contact Dermatitis
- Cosmeceuticals
- Cosmetic injections
- Cradle Cap
- Creeping eruption
- Cutaneous B-cell lymphoma
- Cutaneous Larva Migrans
- Cutaneous Lupus Erythematosus
- Cutaneous Small Vessel Vasculitis
- Cutaneous Tuberculosis
- Cyclosporin
- Dapsone
- Darier’s Disease
- Deep gyrate erythema
- Degos Disease
- Delusions of Parasitosis
- Dermatitis Herpetiformis
- Dermatitis Papillaris Capillitii
- Dermatitis/Eczema
- Dermatomyositis
- Dermatosis Papulosa Nigra (DPN)
- Digital Myxoid Cysts
- Discoid Eczema
- Dissecting Cellulitis of the Scalp
- Drug Eruptions & Reactions
- Dry skin
- Dyshidrotic eczema
- Dystrophic Epidermolysis Bullosa
- Ecthyma contagiosum
- Eczema in Pregnancy
- Enteroviral Vesicular Stomatitis
- Eosinophilic Cellulitis
- Epidermal Naevus
- Epidermodysplasia Verruciformis
- Epidermoid Cyst
- Epidermolysis Bullosa
- Epidermolysis Bullosa Acquisita
- Epidermolysis Bullosa Simplex
- Erosive Pustular Dermatosis of the Scalp (EPDS)
- Erosive pustulosis
- Erythema Ab Igne
- Erythema Annulare Centrifugum
- Erythema Dyschromicum Perstans and Lichen Planus Pigmentosus
- Erythema Infectiosum
- Erythema Multiforme
- Erythema Nodosum
- Erythrasma
- Erythromelalgia
- Exanthema Subitum
- Excessive hair growth
- Extramammary paget disease
- Fabry Disease
- Female acne
- Female Pattern Hair Loss (FPHL)
- Fibrous Papule of the face
- Fifth disease
- Flushing
- Follicular Degeneration Syndrome
- Follicular Keratotic Naevus
- Follicular lichen planus
- Follicular Mucinosis
- Folliculitis
- Folliculitis barbae traumatica
- Folliculitis Decalvans
- Folliculitis Keloidalis Nuchae
- Fonseca’s Disease
- Forefoot dermatitis
- Ichthyosis
- Icterus gravidarum
- Idiopathic jaundice of pregnancy
- Impetigo
- Incobotulinumtoxin A
- Infantile Haemangiomas
- Infundibular cyst
- Insect Bite Reactions
- Insect bite-induced hypersensitivity
- Intra-Epidermal Squamous Cell Carcinoma
- Intrahepatic Cholestasis of Pregnancy
- Intralesional Steroids
- Irritant Contact Dermatitis (ICD)
- Isotretinoin
- Acquired Ichthyosis
- Laser resurfacing – fractional
- Laser resurfacing-fully ablative
- Laser tattoo removal
- Laser treatment for pigmentation
- Late Onset Acne
- Leg ulcers
- Leg Veins
- Lentigo Maligna
- Leprosy
- Lice
- Lichen Keloidalis Nuchae
- Lichen nitidus
- Lichen Planopilaris
- Lichen planus
- Lichen sclerosus
- Lichen simplex chronicus
- Linear IgA Disease
- Linear Immunoglobulin A Dermatosis
- Lip rejuvenation
- Lipodermatosclerosis
- Lipodystrophy
- Livedo reticularis
- Lobular capillary haemangioma
- Localised scleroderma
- Lower face rejuvenation
- Lymphomatoid papulosis
- Male pattern baldness
- Malignant atrophic papulosis
- Mastocytosis
- Medication-induced cutaneous pigmentation
- Melanocytic naevi
- Melanoma
- Melasma
- Merkel cell carcinoma
- Methotrexate
- Miescher’s cheilitis
- Mikulicz ulcers
- Miliaria
- Mohs surgery
- Moles
- Molluscum Contagiosum
- Moon-boot foot syndrome
- Morphoea
- Mucoceles
- Mucocutaneous lymph node syndrome
- Mucous cyst
- Mucous membrane pemphigoid
- Muzzle rash
- Mycosis Fungoides
- Naevus Comedonicus
- Naevus fusco-caeruleus zygomaticus
- Naevus of Ota (NOO) and Ito (NOI)
- Naevus sebaceous
- Naevus spilus
- Nagashima Disease
- Nails
- Nappy rash
- Necrobiosis Lipoidica
- Necrolytic Migratory Erythema
- Neonatal acne
- Neonatal and infantile acne
- Neonatal cephalic pustulosis
- Neonatal lupus erythematosus
- Neurodermatitis
- Neurotoxins
- Nevus araneus
- Nevus flammeus
- Non Tuberculous Mycobacteria
- Norwegian scabies
- Notalgia paraesthetica
- Nuchal Keloid Acne
- Palmar hyperhidrosis
- Palmoplantar keratoderma
- Palmoplantar Pustulosis (PPP)
- Palpable migrating erythema
- Panniculitis
- Papular acrodermatitis of childhood
- Papular dermatoses of pregnancy
- Papular Urticaria
- Paraneoplastic pemphigus
- Parvovirus B19 infection
- Pearly penile papules
- Pediculosis
- Pedroso’s Disease
- Pemphigoid Gestationis (PG)
- Pemphigus foliaceus
- Pemphigus vulgaris
- Periadenitis mucosa necrotica recurrens (PMNR)
- Perimenopausal Skin
- Perioral dermatitis
- Periorificial dermatitis
- Perlèche
- Perniosis
- Persistent palmoplantar pustulosis
- Photodynamic therapy
- Photosensitivity Dermatitis (CAD) and Actinic Reticuloid (PD/AR) Syndrome
- Phototherapy
- Pigmentation of Pregnancy
- Pigmented Purpuric Dermatosis
- Pilosebaceous Naevoid Disorder
- Pimples
- Pityriasis Alba
- Pityriasis rosea
- Pityriasis Rubra Pilaris
- Pityriasis versicolor
- Plantar hyperhidrosis
- Plumber’s itch
- Poikiloderma of Civatte
- Polyarteritis nodosa (PAN)
- Polymorphic eruption of pregnancy
- Polymorphic light eruption
- Polymorphous light eruption
- Pompholyx
- Porphyria cutanea tarda
- Port-wine Stain
- Post endoscopic thoracic sympathectomy (ETS) sweating
- Post-adolescent acne
- Post-inflammatory hyperpigmentation
- Post-inflammatory hypopigmentation
- Post-Inflammatory Pigmentation
- Pregnancy dermatoses
- Prickly heat
- Primary Cutaneous B-Cell Lymphoma
- Primary neuroendocrine carcinoma of the skin
- Propranolol for Infantile Haemangioma
- Prurigo Gravidarum
- Prurigo nodularis
- Prurigo of Pregnancy
- Prurigo Pigmentosa
- Pruritic Folliculitis of Pregnancy
- Pruritic urticarial papules and plaques of pregnancy (PUPPP)
- Pruritus ani
- Pruritus with no rash
- Pseudo-glucagonoma Syndrome
- Pseudofolliculitis Barbae
- Pseudopelade in African Americans
- Pseudopelade of the Central Scalp
- Pseudoxanthoma Elasticum
- Psoriasis
- Pustular eruption
- Pustulosis palmaris et plantaris
- Pyoderma gangrenosum
- Pyogenic Granuloma
- Sand-worm eruption
- Sarcoidosis
- Scabby mouth
- Scabies
- Scar treatments
- School sores
- Sebaceous cyst
- Sebaceous hyperplasia
- Seborrhoeic Dermatitis and Cradle Cap
- Seborrhoeic Keratoses
- Senile warts
- Shave bumps
- Sheep pox
- Shingles
- Sixth Disease
- Skin Cancer – An Overview
- Skin irritation
- Skin structure and function
- Skin Tags
- Slapped cheek disease
- Solar keratoses
- Speckled lentiginous naevus
- Spider angioma
- Spider Naevi
- Spider Naevus
- Spider veins
- Spironolactone
- Spots
- Squamous Cell Carcinoma
- Squamous Cell Carcinoma In Situ
- Steatocystoma Multiplex
- Steroid induced rosacea
- Steroids
- Stevens-Johnson syndrome (SJS)
- Strawberry birthmarks
- Stretch Marks
- Striae
- Subcision
- Subcutaneous fat necrosis of the newborn
- Sun Protection & Sunscreens
- Sun spots
- Superficial gyrate erythema
- Sutton’s ulcer
- Sweat rash
- Sweaty feet
- Sweaty hands
- Sweaty sock dermatitis
- Sweaty underarms
- Sweet’s Syndrome
- Syringoma
- Systemic steroids
- T-cell lymphoma
- Tattoo removal
- Telangiectases
- Telogen effluvium
- Tetracyclines
- Thalidomide
- Three-day Fever
- Tinea capitis
- Tinea Onychomycosis
- Tinea versicolor
- Topical steroids
- Toxic epidermal necrolysis (TEN)
- Toxic Pustuloderma
- Trabecular cell carcinoma of the skin
- Traction Alopecia
- Transient acantholytic dermatosis
- Treeman Syndrome
- Tuberous Sclerosis Complex
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