Leprosy

Disease class: Bacterial infection

This is a notifiable disease. This means that all diagnosed cases must be reported to the national Public Health services.

 

Also known as

• Hansen disease

 

Pathogens 

• Mycobacterium leprae
• Mycobacterium lepromatosis

Panniculitis

Disease class: Skin diseases

Cutaneous lupus erythematosus

Disease class: Connective tissue diseases

[Dermatology] Introduction

Dermatologists specialise in diseases of the integumentary system.

 

Etymology

Ancient Greek δέρμα (dérma) = skin, hide
Ancient Greek -λογία (logia) = study of

 

History taking

 

Physical examination

 

Skin diseases

 

Common diseases:

• Folliculitis
• Acne vulgaris
• Premalignancies
• Actinic keratosis
• Squamous cell carcinoma in situ (Bowen's disease)
•  Neoplasms:
• Basal cell carcinoma
• Squamous cell carcinoma
• Melanoma
• Psoriasis 
• Alopecia 
• Dermatitis (eczema)
• Atopic dermatitis 
• Allergic contact dermatitis 
• Epidermoid cyst
• Milia
• Molluscum contagiosum
• Trichilemmal cyst
• Seborrhoeic dermatitis
• Rosacea 

 

Other diseases:

• Lichen planus
• Hidradenitis suppurativa (acne inversa)
• Hyperhidrosis
• Hypertrichosis
• Erythema multiforme
• Toxic epidermal necrolysis and Stevens–Johnson syndrome

Localised sclerosis

Disease class: Connective tissue diseases
Disease class: Skin diseases

Also known as

• Localised scleroderma

 

X-linked ichthyosis

Immersion foot

Disease class: Foot diseases [Skin diseases]

Subtypes

• Trench foot

Metabolic skin diseases

Disease class: Metabolic diseases

Disease class: Skin diseases

Types

• Lipodystrophy 
• Necrobiosis lipoidica

Rosacea

Disease class: Skin diseases

Potential pathogens

• Demodex species
  

Rhinophyma

Disease class: Sebaceous gland diseases 

 Causes

• Rosacea

Hypohidrosis

Disease class: Sweat gland diseases

This term describes deficient sweat production.
The skin of the hands and feet may be excessively dry.

 

Management

• Emollients

Hyperhidrosis

Disease class: Sweat gland diseases

This term describes excessive sweat production.
The skin of the hands and feet may be excessively moist.

Management

• Antiperspirants: Aluminium chloride

Herpes labialis

Disease class: Herpes simplex

Also known as

Cold sore

Pathogen: Herpes simplex virus 

Herpes simplex

Disease class: skin diseases, Viral

Types

• Herpes genitalis
• Herpes labialis
• Kaposi varicelliform eruption
• keratitis, Herpetic
• stomatitis, Herpetic

Pathogen: Herpes simplex virus 

Molluscum contagiosum

Disease class: skin diseases, Viral

Pathogen

• Molluscum contagiosum virus

Exanthema subitum

Disease class: Exanthema

Disease class: skin diseases, Viral

Also known as

Roseola infantum
Sixth disease

 

Pathogen

• HHV-6 (Herpesvirus 6)

Cellulitis

Disease class: Connective tissue diseases
Disease class: Suppuration  

 

Stevens-Johnson syndrome

Disease class: Erythema multiforme

Erythema nodosum

Disease class: Erythema

Also known as

Subacute migratory panniculitis of Vilanova and Piñol

 

 

Hidradenitis Suppurativa

Disease class: Hidradenitis

Disease class: Suppuration 

Also known as

• Acne inversa
• Suppurative hidradenitis 

 

Management

• Antibiotics