top of page



Pityriasis lichenoides chronica is an uncommon, idiopathic, acquired dermatosis, characterized by evolving groups of erythematous, scaly papules that may persist for months.

Signs and Symptoms:

Although other forms of the disease occur at younger ages, some individuals start having long term symptoms at thirty years of age. This disease also affects adolescents and young adults. This also affects the immune system which therefore results in rashes. The symptoms rarely affect the face or scalp, but occurs at other sites of the body. The duration may last for months or even several years. For instance, new crops of lesions appear every few weeks.


Pityriasis lichenoides chronica (PLC) is probably caused by a hypersensitivity reaction to infectious agents such as the Epstein–Barr virus. Other infectious agents include the adenovirus and Parvovirus B19.


There is no standard treatment for PLC. Treatments may include ultraviolet phototherapy, topical steroids, sun exposure, oral antibiotics, corticosteroid creams and ointments to treat rash and itching.

One study identified the enzyme bromelain as an effective therapeutic option for PLC.

Top UK Dermatologists Online Consultation

For more information on this topic please click on the links below

Link to British Association of Dermatologists article on dermatology from DermUK
Link to DermNet NZ article on dermatology from DermUK
Link to Medscape dermatology article from DermUK
Link to NICE clinical knowledge summary on dermatology from DermUK

Recent Posts

See All

Psoriasis is a long-lasting autoimmune disease characterized by patches of abnormal skin

Pemphigoid is a group of rare autoimmune blistering skin diseases. Pemphigoid is similar in general appearance to pemphigus.

Pemphigus vulgaris is a rare chronic blistering skin disease and the most common form of pemphigus.

bottom of page