🩺 Medically reviewed by the Health Decoded Guide Editorial Team • Last reviewed: July 2026

Skin, hair and nail changes are among the most common reasons people seek health information. They can range from harmless cosmetic concerns to signs of underlying medical conditions.

Health Decoded Guide provides easy-to-understand, medically reviewed information to help you understand common skin, hair and nail conditions, their possible causes, treatment options and when medical attention may be needed.

Many skin, hair and nail conditions can be managed with proper care, while others require medical evaluation to prevent complications or identify an underlying health problem.

Browse skin, hair and nail conditions below.

🧴 Skin Basics

• Understanding Your Skin
• Skin Types Explained: Oily, Dry, Combination & Sensitive Skin
• Why Skin Changes Colour
• Skin Rashes Explained
• Itchy Skin: Common Causes
• Dry Skin: Causes and Care
• Oily Skin: Causes and Care

🔴 Acne & Common Skin Conditions

• Acne
• Blackheads & Whiteheads
• Cystic Acne
• Acne Scars
• Keratosis Pilaris
• Eczema (Atopic Dermatitis)
• Contact Dermatitis
• Psoriasis
• Hives (Urticaria)
• Rosacea

🦠 Skin Infections

• Fungal Skin Infections
• Ringworm
• Athlete's Foot
• Scalp Ringworm (Tinea Capitis)
• Impetigo
• Cellulitis
• Boils & Skin Abscesses
• Warts
• Scabies

🎨 Skin Colour & Pigmentation

• Hyperpigmentation
• Dark Spots
• Melasma
• Post-Inflammatory Hyperpigmentation
• Vitiligo
• Acanthosis Nigricans

💇🏽 Hair & Scalp Conditions

• Hair Loss (Alopecia)
• Male Pattern Hair Loss
• Female Pattern Hair Loss
• Alopecia Areata
• Traction Alopecia
• Hair Breakage
• Dandruff
• Seborrhoeic Dermatitis
• Dry & Itchy Scalp
• Scalp Psoriasis

💅 Nail Conditions

• Nail Anatomy Explained
• Brittle Nails
• Thick Nails
• Ingrown Toenail
• Fungal Nail Infection (Onychomycosis)
• Nail Discoloration
• White Spots on Nails
• Spoon Nails (Koilonychia)
• Clubbing
• Nail Psoriasis
• Nail Separation (Onycholysis)
• Paronychia (Nail Fold Infection)
• Nail Trauma
• When Nail Changes May Signal an Underlying Disease

⚠️ Lumps, Moles & Skin Changes

• Skin Lumps & Bumps
• Cysts
• Lipomas
• Moles
• Changes in a Mole
• Skin Tags
• When a Skin Change Needs Medical Attention

☀️ Skin Health & Prevention

• How to Protect Your Skin from the Sun
• Sunscreen Explained
• Skin Care for Different Skin Types
• Preventing Acne Breakouts
• Caring for Sensitive Skin
• When to See a Doctor About a Skin Problem