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Klippel-Trénaunay Syndrome. This Young Patient Had Extensive Port-Wine Stains, Overgrowth, and Venous Varicosities with Lymphedema Involving the Lower Extremity.
Labial Melanotic Macule. Small, Dark Brown, Solitary Macule on the Left Side of the Lower Lip of a Young Child with Eczema.
Langerhans Cell Histiocytosis. Hemorrhagic Papules and Erosions in the Inguinal Crease of a 10-Month-Old Girl.
Large Epidermal Nevus on the Right Side of the Trunk. This More Diffuse Presentation Has Been Termed Nevus Unius Lateris.
Keratosis Pilaris: Follicular Papules that Have a Central Core of Keratin Debris.
Koplik Spots (Arrows): Punctate Whitish Gray Papules on an Erythematous Base that Appear on the Buccal Mucosa.
Lamellar Ichthyosis is Characterized by Thick, Platelike Scales.
Large Edematous, Erythematous, Arcuate, and Annular Plaques on the Arms of This Teenager with Subacute Cutaneous Lupus Erythematosus.
Large Nevus Sebaceus on the Scalp of a Young Child with Skin of Color. Note the Hairless Pink to Brown Plaque. These Lesions May Not Always Appear Yellowish Orange in Color, Especially in Those with Darker Skin Tones. Reproduced with Permission from Dermnet Nz.
Left Axillary Vault with a Plaque of Inverse Psoriasis (Note Reduced Scaling Due to Intertriginous Location).
Lesions of Active Discoid Lupus Erythematosus on the Arm in Addition to Areas of Postinflammatory Hyperpigmentation and Scarring in Sites of Previous Lesions.
Lesions of Tinea Corporis May be Multiple.
Lichen Planus; Violaceous and Hyperpigmented Papules and Plaques on the Lower Back in a Patient with Skin of Color.
Light Microscopy of Loose Anagen Syndrome. A Dysplastic Anagen Hair with a “ruffled Sock” or “floppy Sock” Appearance of the Cuticle (Yellow Arrow) and a Distorted Hair Bulb (Blue Arrow).
Linear Iga Dermatosis Lesions Showing Bullae Surrounding a Crustthe “cluster of Jewels” Configuration.
Linear Morphea Involving the Face. Note the Atrophy Affecting the Chin to the Left of the Midline.
Localized Morphea on the Back of a Teenager. This Older Lesion is Characterized by an Atrophic Plaque.
Marked Thinning of the Temporal Scalp Due to Traction Alopecia. Note the Hairstyle with Many Small, Tight Braids Typically Seen in Children with This Disorder.
Lesions Became Progressively More Confluent and Purpuric in This Patient with Henoch-Schönlein Purpura.
Lesions of Tinea Corporis are Rings (Ie, Annuli) that Have an Elevated, Erythematous, Scaling Border and Central Clearing.
Lichenification. The Typical Skin Markings are Very Prominent Due to Chronic Scratching. Also Note the Tiny Erosions (Arrows), Some of Which Have Formed Crusts.
Light-Colored, Short, Sparse Hair is Seen in This Young Patient with Anhidrotic (Hypohidrotic) Ectodermal Dysplasia.
Measles Produces an Erythematous Macular and Papular Eruption.
Meningococcemia. Purpuric Plaques with Jagged Borders and Early Necrosis.
Miliaria Crystallina is Characterized by Fragile Superficial Vesicles Without Surrounding Erythema.
Mite Bites. Multiple, Clustered, Edematous Red Papules and Plaques.
Moccasin Form of Tinea Pedis with Erythema and Scaling Involving the Plantar Surface and Side of the Left Foot. Reproduced with Permission from Ely Jw, Rosenfeld S, Seabury Stone M. Diagnosis and Management of Tinea Infections. Am Fam Physician. 2014;90(10):702-710.
Molluscum Contagiosum with Koebnerization, Manifested as Several Lesions in a Linear Distribution.
Molluscum Lesions with Enlargement and Erythema, Signifying the Host Immune Response Against the Virus. These Lesions Resolved Shortly Thereafter.
Morphea of the Thigh. An Ivory-Colored Indurated Plaque with Surrounding Peripheral Erythema.
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