Diagrams 6 Compare 1 Atlas 7
Diagrams 01 Chronic Pruritus Classification (IFSI 2007) [CLASSIFICATION] 02 Chronic Pruritus — Cause Decision Tree [DECISION TREE] 03 Chronic Pruritus — Initial Workup Pathway [WORKUP PATHWAY] 04 Neuropathic Pruritus Algorithm [DECISION TREE] 05 Pruritus With Primary Lesions [DECISION TREE] 06 Chronic Pruritus — Treatment by Cause [SWIMLANE] Chronic Pruritus (>6 weeks) Dermatologic Group I — Pruritus on diseased / inflamed skin Inflammatory Atopic Dermatitis
Psoriasis vulgaris
Lichen Planus
Contact Dermatitis (Allergic / Irritant)
Urticaria (chronic spontaneous)
Infectious Scabies
Candidiasis (cutaneous / vulvovaginal)
Pediculosis (head / pubic lice)
Varicella / VZV (reactivation)
Autoimmune Bullous Pemphigoid
Dermatitis Herpetiformis (DH)
Lichen Sclerosus
Neoplastic / Lymphoproliferative Mycosis Fungoides (CTCL)
Mastocytosis (Cutaneous)
Systemic Group II — Pruritus on non-diseased skin Renal / Uremic CKD-Associated Pruritus (formerly uremic pruritus)
Hepatic / Cholestatic Primary Biliary Cholangitis (PBC)
Primary Sclerosing Cholangitis (PSC)
Intrahepatic Cholestasis of Pregnancy (ICP)
Drug-Induced Cholestasis
Hematologic Hodgkin Lymphoma
Polycythemia Vera / MPN
Iron-Deficiency Anemia
Endocrine / Metabolic Thyroid Disease (hypo- and hyperthyroidism)
Diabetes Mellitus
Hyperparathyroidism (secondary in CKD)
Drug-Induced Opioids
ACE Inhibitors
Statins / Chloroquine / Hydroxyurea
Checkpoint Inhibitors (immunotherapy)
Mixed / Secondary Group III — Pruritus with chronic scratch lesions Lichen Simplex Chronicus (LSC)
Prurigo Nodularis
Neuropathic Group IV — Neuropathic Pruritus Brachioradial Pruritus
Notalgia Paresthetica
Post-Herpetic Itch
Small-Fiber Neuropathy (SFN)
Central Neuropathic Itch (MS, stroke, spinal cord)
Psychiatric Group V — Psychogenic / Somatoform Pruritus Delusions of Parasitosis (Delusional Infestation)
OCD-Spectrum / Neurotic Excoriations
Somatoform Pruritus
Multifactorial Group VI — Mixed / Multifactorial Pruritus Pruritus of the Elderly (Senile Pruritus)
Chronic Idiopathic Pruritus