Pruritis

Causes

Appropriate Tests

 

Clinical assessment; pathology tests may contribute to diagnosis.

Intestinal worms.

With skin lesions

Skin biopsy with immunofluorescence on fresh tissue, if indicated.

Dermatitis, especially

  • Contact dermatitis
  • Eczema

 

Drug reactions

 

Urticaria

 

Infective lesions, especially

  • Fungal
  • Ecto-parasites, especially
    • Scabies

 

Skin scrapings - MCS fungal.

Skin scrapings from area of burrows - microscopy

Urticaria pigmentosa

 

Cutaneous lymphoma (non-Hodgkin)

See Lymphoma (non-Hodgkin)

Without skin lesions

 

Aged, thin skin

 

Drug reactions, especially

  • Aspirin
  • Opiates

 

Renal failure, chronic

 

Cholestasis

 

Polycythaemia vera

 

HIV infection

 

Hodgkin lymphoma

 

Diabetes mellitus

 

Iron deficiency

 

Plasma cell dyscrasias

 

Psychogenic

 

Idiopathic