Pityriasis lichenoides chronica

Pityriasis lichenoides chronica
Classification and external resources
ICD-10	L41.1
eMedicine	derm/334

Pityriasis lichenoides chronica (also known as "Chronic guttate parapsoriasis," "Chronic pityriasis lichenoides," "Dermatitis psoriasiformis nodularis," "Parapsoriasis chronica," and "Parapsoriasis lichenoides chronica") is an uncommon, idiopathic, acquired dermatosis, characterized by evolving groups of erythematous, scaly papules that may persist for months.^{[1]:456[2]:737}

See also

• Cutaneous T-cell lymphoma
• Pityriasis lichenoides
• Parapsoriasis
• Skin lesion

References

1. ^ Freedberg, et al. (2003). Fitzpatrick's Dermatology in General Medicine. (6th ed.). McGraw-Hill. ISBN 0-07-138076-0.
2. ^ James, William D.; Berger, Timothy G.; et al. (2006). Andrews' Diseases of the Skin: clinical Dermatology. Saunders Elsevier. ISBN 0-7216-2921-0. 

External links

• DermNet scaly/pityriasis-lichenoides

v • d • e Diseases of the skin and subcutaneous tissue (integumentary system) (L, 680-709) Infections Bacterial skin disease Staphylococcus (Staphylococcal scalded skin syndrome, Impetigo, Boil, Carbuncle) · Strep (Impetigo) · Corynebacterium (Erythrasma) Viral skin disease Wart · Molluscum contagiosum · Erythema infectiosum · Exanthema subitum · Herpes simplex (Herpetic whitlow) General Cellulitis (Paronychia) · Acute lymphadenitis · Pilonidal cyst · Pimple (Pustule) Bullous disorders acantholysis (Pemphigus, Transient acantholytic dermatosis) · Pemphigoid (Bullous, Cicatricial, Gestational) · Dermatitis herpetiformis Inflammatory Dermatitis and eczema Atopic dermatitis · Seborrhoeic dermatitis (Dandruff, Cradle cap) · Contact dermatitis (Diaper rash, Urushiol-induced contact dermatitis) · Erythroderma · Lichen simplex chronicus/Prurigo nodularis · Itch (Pruritus ani, Pruritus scroti, Pruritus vulvae) · Nummular dermatitis · Dyshidrosis · Pityriasis alba Papulosquamous disorders Psoriasis (Psoriatic arthritis) · Parapsoriasis (Pityriasis lichenoides et varioliformis acuta, Pityriasis lichenoides chronica, Lymphomatoid papulosis) · other pityriasis (Pityriasis rosea, Pityriasis rubra pilaris) · other lichenoid (Lichen planus, Lichen nitidus) Urticaria Dermatographic urticaria · Cold urticaria · Cholinergic urticaria · Solar urticaria Erythema Erythema multiforme/drug eruptions: Stevens-Johnson syndrome · Toxic epidermal necrolysis · Erythema nodosum Other erythema: Erythema annulare centrifugum · Erythema marginatum · Keratolytic winter erythema · Necrolytic migratory erythema · Erythema toxicum Radiation-related disorders Sunburn · actinic rays (Actinic keratosis, Actinic cheilitis) · Polymorphous light eruption (Acne aestivalis) · Radiodermatitis · Erythema ab igne Pigmentation/ Dyschromia hypopigmentation (Albinism, Vitiligo) · hyperpigmentation (Melasma, Freckle, Café au lait spot, Lentigo/Liver spot, Acanthosis nigricans, Acral acanthotic anomaly) Other skin keratosis/hyperkeratosis (Seborrheic keratosis, Callus) · other epidermal thickening (Ichthyosis acquisita, Palmoplantar keratoderma) skin ulcer (Pyoderma gangrenosum, Bedsore) Cutaneous Markers of Internal Malignancy (Florid cutaneous papillomatosis, acanthosis nigricans, sign of Leser-Trelat) atrophic (Lichen sclerosus, Acrodermatitis chronica atrophicans) necrobiosis (Granuloma annulare, Necrobiosis lipoidica) · other granuloma (Granuloma faciale, Pyogenic granuloma) cutaneous vasculitis (Livedoid vasculitis, Erythema elevatum diutinum) Connective tissues collagen disease: Keloid localized connective tissue disorders: Lupus erythematosus (Discoid lupus erythematosus, Subacute cutaneous lupus erythematosus) · Scleroderma/Morphea · Linear scleroderma · Calcinosis cutis · Sclerodactyly · Ainhum see also congenital, neoplasia

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