• Alopecia
• Acniform eruptions
• Benign tumors
• Bullous diseases
• Dermoscopy
• Nevi, melanoma
• Nonmelanoma cancer
• Psoriasis and others
• Stds
• Vascular tumors
• Vulvar disease

• Psoriasis
• Psoriasis Introduction
• Psoriasis Approach to the Patient
• Chronic Plaque Psoriasis
• Guttate Psoriasis
• Localized Pustular Psoriasis
• Inverse Psoriasis
• Generalized Pustular Psoriasis
• Nail Psoriasis
• Psoriasis Treatment Topical Therapy
• Psoriasis Treatment Phototherapy
• Psoriasis Treatment Systemic Therapy
• Psoriasis Biologic Therapy
• Seborrheic dermatitis
• Seborrheic Dermatitis Introduction
• Seborrheic Dermatitis in Adults
• Seborrheic Dermatitis in Infants
• Seborrheic Dermatitis Treatment and Dandruff Treatment
• Pityriasis rosea
• Pityriasis Rosea Introduction
• Pityriasis Rosea Skin Findings and Clinical Course
• Pityriasis Rosea Treatment
• Lichen planus
• Lichen Planus Introduction
• Cutaneous Lichen Planus
• Mucosal Lichen Planus
• Nail Lichen Planus
• Lichen planus Treatment
• Lichen sclerosus
• Lichen Sclerosus Introduction
• Lichen sclerosis Skin Findings
• Lichen Sclerosus Mucosal Findings
• Lichen Sclerosus Treatment

Cutaneous Lichen Planus

Papular lichen planus is the most common form. Classic purple polygonal papules are located on the flexor surfaces of the wrists and forearms, the ankles and the lumbar region. Antibodies to hepatitis C are detected in about 16% of patients with cutaneous lichen planus

Lesions that persist become thicker and dark red. These hypertrophic lesions are most often they are on the shins with papules aggregating into broad based plaques. Vesicles or bullae may appear. Persistent brown staining develops after the lesions resolve.

Follicular lichen planus occurs on the scalp with numerous follicle-based papules. Without treatment, permanent hair loss with marked scarring may occur. This form may be difficult to discern from lupus clinically. Scalp biopsy with immunofluorescence is often helpful in making this distinction.