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GlossaryLichenoid Reaction (Lichenoid Dermatitis)

inflammatory skin condition resembling lichen planus with itchy bumps

A Lichenoid Reaction, also known as Lichenoid Dermatitis, is an inflammatory skin condition characterized by a rash that resembles lichen planus. It often presents as small, itchy, purple or red bumps on the skin and can be triggered by medications, infections, or autoimmune diseases. This reaction involves an immune response where T-cells attack the skin, leading to damage and inflammation.

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research Lichenoid Dermatitis from Interferon Alpha-2a in a Patient with Metastatic Renal Cell Carcinoma and Seronegative HCV

4 citations, April 2016 in “Journal of The American Academy of Dermatology”

A patient with advanced kidney cancer and no hepatitis C developed skin inflammation due to a drug called interferon alpha-2a.

research Human T-Lymphotropic Virus 1 (HTLV-1)-Associated Lichenoid Dermatitis Induced by CD8+ T Cells in HTLV-1 Carrier, HTLV-1-Associated Myelopathy/Tropical Spastic Paraparesis and Adult T-Cell Leukemia/Lymphoma

5 citations, June 2015 in “The Journal of Dermatology”

HTLV-1-associated lichenoid dermatitis (HALD) is linked to an immune response against HTLV-1-infected cells.

research Linear Lichen Planopilaris of the Trunk: First Report of a Case

18 citations, May 2006 in “Journal of Cutaneous Medicine and Surgery”

Linear lichen planopilaris can affect the trunk, not just the face.

research Red Dots in a Net-Like Pattern on the Upper Chest: A Novel Clinical Observation in Frontal Fibrosing Alopecia and Fibrosing Alopecia in Pattern Distribution

8 citations, August 2017 in “Skin appendage disorders”

Red dots on the upper chest may be an early sign of certain types of hair loss.

research Folliculocentric Papules and Alopecia in a 70-Year-Old Woman Diagnosed with Graham-Little-Piccardi-Lassueur Syndrome

May 2014 in “Clinical and Experimental Dermatology”

A 70-year-old woman with a rare skin condition improved after treatment with topical steroids and acitretin.

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community Diffuse hair loss and scalp biopsies

in Research 692 upvotes 4 months ago

Scalp biopsies are crucial for diagnosing hair loss conditions like Diffuse Unpatterned Alopecia (DUPA) and retrograde hair loss, as treatments like finasteride and dutasteride may not be effective if other conditions are present. Combining PPAR-GAMMA agonists with retinoids could improve treatments for conditions like Lichen Planopilaris.