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Skin Diseases A-Z

Comprehensive A-Z directory of 211+ skin conditions including eczema, psoriasis, melanoma, acne, rosacea, and more. Learn about symptoms, causes, and evidence-based treatments.

The Skin Diseases A–Z Directory by ScanSkinAI is a comprehensive medical reference covering more than 161 skin conditions — from common rashes and acne to serious diseases like melanoma and chronic inflammatory disorders. Use this guide to understand symptoms, causes, risk factors, diagnosis methods, and evidence-based treatment options.

If you're unsure about a skin change, you can also use AI skin analyzer to quickly screen your symptoms and decide on next steps.

Common Skin Conditions

💢Acne🔴Eczema🩹Psoriasis🌹Rosacea⚠️Melanoma🦶Fungal Infections🎨Vitiligo🔬Skin Cancer

Search by Symptom

All Skin Conditions A-Z

Complete Skin Conditions List (A–Z)

This directory includes detailed guides for over 161 dermatological diseases. Each condition page explains:

What the condition is
Early warning signs
Causes and risk factors
Whether it is contagious
Diagnosis methods
Treatment options
When to see a dermatologist

Skin Cancers

  • Melanoma
  • Basal Cell Carcinoma
  • Squamous Cell Carcinoma
  • Actinic Keratosis
  • Bowen's Disease

Inflammatory Skin Diseases

  • Eczema
  • Psoriasis
  • Rosacea
  • Dermatitis
  • Lichen Planus
  • Lupus-related conditions

Infectious Skin Diseases

  • Fungal infections
  • Bacterial infections
  • Viral rashes
  • Parasitic infestations

Pigmentation Disorders

  • Vitiligo
  • Melasma
  • Post-inflammatory hyperpigmentation
  • Birthmarks

Hair & Scalp Disorders

  • Alopecia Areata
  • Fungal scalp infections
  • Folliculitis
  • Hair shaft disorders

Benign Growths & Lesions

  • Moles
  • Skin tags
  • Lipomas
  • Cysts
  • Seborrheic keratosis

Also includes: Rare & genetic skin disorders, autoimmune blistering diseases, keratinisation disorders, and connective tissue diseases.

Why Use a Skin Disease Directory?

Recognize symptoms earlier
Compare similar-looking skin conditions
Understand when symptoms may be serious
Learn evidence-based treatments
Prepare for dermatologist visits
Avoid misinformation online

Educational resources improve early detection and treatment outcomes.

When to See a Dermatologist Urgently

Seek immediate medical care if you experience:

A rapidly changing or bleeding mole
A wound that does not heal after several weeks
Severe pain, swelling, or pus
Fever with widespread rash
Sudden blistering or skin peeling
Signs of severe infection

These symptoms may indicate serious or life-threatening conditions.

All 211 Conditions:

Acanthosis Nigricans • Acne (Acne Vulgaris) • Acne Keloidalis Nuchae • Actinic Keratosis • Albinism (Oculocutaneous Albinism) • Alopecia Areata • Atopic Dermatitis (Eczema) • Athlete's Foot (Tinea Pedis) • Basal Cell Carcinoma • Bedsores (Pressure Ulcers) • Birthmarks • Boils (Furuncles) • Bullous Pemphigoid • Cellulitis • Cherry Angioma • Cold Sores (Herpes Labialis) • Contact Dermatitis • Dandruff (Pityriasis Capitis) • Dermatofibroma • Dermatomyositis • Dyshidrotic Eczema • Erysipelas • Erythema Multiforme • Folliculitis • Fordyce Spots • Granuloma Annulare • Hand, Foot and Mouth Disease • Hemangioma • Herpes Zoster (Shingles) • Hidradenitis Suppurativa • Hives (Urticaria) • Hyperhidrosis • Ichthyosis • Impetigo • Keloids • Keratosis Pilaris • Lichen Planus • Lipoma • Melanoma • Melasma • Milia • Molluscum Contagiosum • Nail Fungus (Onychomycosis) • Nummular Eczema • Psoriasis • Ringworm (Tinea Corporis) • Rosacea • Scabies • Seborrheic Dermatitis • Seborrheic Keratosis • Skin Tags (Acrochordons) • Squamous Cell Carcinoma • Sunburn • Tinea Versicolor • Vitiligo • Warts • Xanthelasma • Xeroderma Pigmentosum • Acral Lentiginous Melanoma • Actinic Cheilitis • Acquired Ichthyosis • Acute Generalized Exanthematous Pustulosis (AGEP) • Angioedema • Angiokeratoma • Aphthous Ulcers (Canker Sores) • Arsenical Keratosis • Balanitis • Beau's Lines • Becker Nevus • Blue Nevus • Bowen's Disease • Café-au-Lait Spots • Calcinosis Cutis • Candidiasis (Yeast Infection) • Capillaritis • Carbuncle • Cavernous Hemangioma • Chapped Lips (Cheilitis) • Chilblains • Chloasma (Melasma) • Chronic Venous Insufficiency • Cicatricial (Scarring) Alopecia • Corns and Calluses • Congenital Melanocytic Nevus • Cutaneous Horn • Cutaneous Larva Migrans • Cutis Laxa • Dermatitis Herpetiformis • Diabetic Skin Conditions • Discoid Lupus Erythematosus • Dry Skin (Xerosis) • Drug Eruption • Epidermoid Cyst • Erythema Nodosum • Erythrasma • Erythroderma • Fungal Nail Infection (Onychomycosis) • Genital Herpes • Genital Warts • Heat Rash (Miliaria) • Intertrigo • Lichen Sclerosus • Lichen Simplex Chronicus • Livedo Reticularis • Lupus (Systemic Lupus Erythematosus) • Lyme Disease • Measles • Moles (Nevi) • Morphea • Nail Psoriasis • Necrotizing Fasciitis • Neurodermatitis • Onychomycosis • Pemphigus • Perioral Dermatitis • Photoaging • Pilonidal Cyst • Pityriasis Rosea • Pityriasis Versicolor (Tinea Versicolor) • Plantar Warts • Poison Ivy, Oak, and Sumac • Polymorphous Light Eruption (PMLE) • Port-Wine Stain • Prurigo Nodularis • Pyoderma Gangrenosum • Pyogenic Granuloma (Lobular Capillary Hemangioma) • Raynaud's Phenomenon • Scarlet Fever • Scleroderma • Sebaceous Cyst • Shingles (Herpes Zoster) • Spider Angioma • Spider Veins (Telangiectasias) • Stasis Dermatitis • Stevens-Johnson Syndrome • Stretch Marks (Striae) • Swimmer's Itch • Syphilis • Tinea Capitis (Scalp Ringworm) • Tinea Cruris (Jock Itch) • Toxic Epidermal Necrolysis • Varicose Veins • Vasculitis • Venous Ulcers • Hailey-Hailey Disease (Familial Benign Chronic Pemphigus) • Kaposi Sarcoma • Amelanotic Melanoma • Cutaneous Metastasis • Merkel Cell Carcinoma • Neurofibroma • Cholinergic Urticaria • Post-Inflammatory Hyperpigmentation (PIH) • Post-Inflammatory Hypopigmentation • Idiopathic Guttate Hypomelanosis • Pityriasis Alba • Paronychia (Nail Fold Infection) • Petechiae • Purpura • Sebaceous Hyperplasia • Xanthoma • Rhinophyma • Telangiectasia (Thread Veins) • Phytophotodermatitis • Chickenpox (Varicella) • Rubella (German Measles) Rash • Viral Exanthem (Viral Rash) • Asteatotic Eczema (Eczema Craquelé) • Eczema Herpeticum • Inverse Psoriasis (Flexural Psoriasis) • Insect Bite Reactions • Dermatographia (Skin Writing) • Onycholysis (Nail Separation) • Ingrown Hair (Pseudofolliculitis Barbae) • Head Lice (Pediculosis) • Sporotrichosis (Rose Gardener's Disease) • Leprosy (Hansen's Disease) • Lentigines (Sun Spots / Age Spots) • Hypopigmentation (Loss of Skin Colour) • Fixed Drug Eruption • Granuloma Faciale • Grover's Disease (Transient Acantholytic Dermatosis) • Sweet's Syndrome (Acute Febrile Neutrophilic Dermatosis) • Radiation Dermatitis • Kerion (Inflammatory Scalp Ringworm) • Tinea Barbae (Beard Ringworm) • Tinea Faciei (Facial Ringworm) • Tinea Manuum (Hand Ringworm) • Majocchi's Granuloma • Ecthyma • Herpes Gladiatorum (Mat Herpes) • Palmoplantar Pustulosis • Lichen Nitidus • Lichen Planopilaris • Linear IgA Bullous Dermatosis • Pityriasis Lichenoides • Jessner's Lymphocytic Infiltration • Kyrle Disease • Darier Disease • Dermatosis Papulosa Nigra • Digital Mucous Cyst (Myxoid Cyst) • Dissecting Cellulitis of the Scalp • Epidermolysis Bullosa • Acrodermatitis Enteropathica • Bromhidrosis (Body Odour) • Burns (Skin Burns) • Frostbite • Cutaneous Graft-Versus-Host Disease • Granuloma Inguinale (Donovanosis) • Chondrodermatitis Nodularis Helicis • Pachyonychia Congenita • Yellow Nail Syndrome

Get Instant AI-Powered Skin Analysis

Not sure which condition matches your symptoms? Upload a photo for AI skin analysis and receive instant screening results. The system helps you identify possible skin conditions, assess risk levels, decide whether medical care is needed, and monitor skin changes over time. AI screening is quick, private, and available 24/7.

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Mole Changed?

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Itchy Rash?

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Wound Not Healing?

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Researching a serious diagnosis? Start with our skin cancer hub covering melanoma, basal cell carcinoma, squamous cell carcinoma and actinic keratosis.

Most-searched everyday conditions have their own in-depth guides: eczema, hives (urticaria), contact dermatitis, heat rash and folliculitis.

Skin infections and recurrent inflammatory conditions: impetigo, cellulitis, molluscum contagiosum, perioral dermatitis, dyshidrotic eczema and hidradenitis suppurativa.

?Frequently Asked Questions

Medical Information Disclaimer

The information provided in this skin diseases directory is for educational purposes only and is not intended as medical advice. Always consult a qualified healthcare provider for proper diagnosis and treatment of skin conditions.

Content reviewed by:ScanSkinAI Clinical Advisory Team
Last updated:October 2026
American Academy of Dermatology NHS Skin Conditions DermNet NZ

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