Derm Dx: An enlarging erythematous nodule on the forehead

Derm Dx: An enlarging erythematous nodule on the forehead

A 43-year-old woman presents with a growing nodule on her forehead. When it was smaller, it was "easily covered by ...

Derm Dx: A baby with a rash on the hands and feet

Derm Dx: A baby with a rash on the hands and feet

A 3-month-old Hispanic male presents with scattered flesh-colored papules and pustules on his palms and soles.

Derm Dx: Itchy bumps on a man who uses a hot tub regularly

Derm Dx: Itchy bumps on a man who uses a hot tub regularly

A man presents with itchy bumps on his arms and legs. He lives alone, does not have pets, and uses ...

Derm Dx: Hyperpigmented, hyperkeratotic papules covered by waxy scale

Derm Dx: Hyperpigmented, hyperkeratotic papules covered by waxy scale

A moderately obese 40-year-old white woman presents with an intermittently pruritic rash on her chest and flexural and anogenital regions. ...

Derm Dx: Why would this word appear on this man's back?

Derm Dx: Why would this word appear on this man's back?

A 20-year-old college student presents with a 4-week history of intermittent itching, and stroking of the skin of his back ...

Derm Dx: A new scalp lesion in a man with a history of cancer

Derm Dx: A new scalp lesion in a man with a history of cancer

An 84-year-old man with a history of sun exposure, basal and squamous cell carcinomas, and solar keratoses presents with a ...

Derm Dx: Geometrically arranged furrows on the neck

Derm Dx: Geometrically arranged furrows on the neck

Examination of a fair-skinned 80-year-old man who comes in for treatment of actinic keratoses finds geometrically arranged furrows on his ...

Derm Dx: Distressing male groin lesions

Derm Dx: Distressing male groin lesions

A 40-year-old man presents with a 2-year history of asymptomatic but psychologically distressing lesions on his groin.

Derm Dx: A rash about the mouth and chin

Derm Dx: A rash about the mouth and chin

A 21-year-old woman presents with a rash over her mouth and chin that clears when treated with oral prednisone and ...

Derm Dx: A diffuse erythematous eruption on a teenager

Derm Dx: A diffuse erythematous eruption on a teenager

A 16-year-old female presents with a diffuse erythematous eruption with minimal scale, sparing the palms, soles, and face.

Derm Dx: Ptosis following an outpatient cosmetic procedure

Derm Dx: Ptosis following an outpatient cosmetic procedure

A 54-year-old man presents with a 2-week history of a drooping eyelid. He is taking finasteride and underwent an outpatient ...

Derm Dx: Progressive discoloration of the buttocks

Derm Dx: Progressive discoloration of the buttocks

A 53-year-old woman presents with dusky red, slightly indurated, well-demarcated plaques on the buttocks. The condition is asymptomatic but of ...

Derm Dx: A pimple that didn't stop growing

Derm Dx: A pimple that didn't stop growing

A 44-year-old man presents with a 3-year history of what he calls a "pimple that didn't stop growing." He admits ...

Derm Dx: A hairdresser notices a scalp lesion on her client

Derm Dx: A hairdresser notices a scalp lesion on her client

A hairdresser notices a lesion on the scalp of an 89-year-old woman. The patient did not realize it was there; ...

Derm Dx: Vesiculation under the lip

Derm Dx: Vesiculation under the lip

A woman with a history of Hashimoto thyroiditis presents with hair thinning and an erythematous patch with vesiculation under her ...

Derm Dx: A rash that doesn't respond to steroids

Derm Dx: A rash that doesn't respond to steroids

On receiving treatment for seborrheic keratosis on his back, another rash is noted on a man’s chest and abdomen. The ...

Derm Dx: Scattered papules on a high school football player

Derm Dx: Scattered papules on a high school football player

A 16-year-old high school football player presents with scattered flesh-colored papules, and he does not know if his girlfriend, other ...

Derm Dx: An asymptomatic flesh-colored nodule of unknown duration

Derm Dx: An asymptomatic flesh-colored nodule of unknown duration

A flesh-colored nodule is found on examination of a 42-year-old fair-skinned woman. She does not know how long it has ...

Derm Dx: A growing rash on a man with a history of sun exposure

Derm Dx: A growing rash on a man with a history of sun exposure

A fair-skinned 48-year-old man with a history of ample sun exposure presents with dilated blood vessels, brownish hyperpigmentation, and thinning ...

Derm Dx: A painful lesion on the inside of the lip

Derm Dx: A painful lesion on the inside of the lip

A 50-year-old woman presents with a painful lesion on the inside of her upper lip. She has had similar lesions ...

Derm Dx: A rash on the axillae that sometimes itches or burns

Derm Dx: A rash on the axillae that sometimes itches or burns

A 45-year-old moderately obese man presents with well-demarcated erythematous patches on the axillae and an erythematous patch with scale on ...

Derm Dx: A rash about the umbilicus

Derm Dx: A rash about the umbilicus

A 53-year-old man presents with a well-demarcated zone of erythema about the umbilicus that has not responded to treatment with ...

Derm Dx: A rare neoplasm on the nose

Derm Dx: A rare neoplasm on the nose

An 87-year-old man presents with a 3-mm, flesh-colored papule on his nose. He has no history of skin cancer or ...

Derm Dx: A persistent pruritic rash on the buttocks

Derm Dx: A persistent pruritic rash on the buttocks

A 22-year-old man presents with a pruritic rash that was diagnosed as scabies 3 weeks earlier. However, the rash has ...

Derm Dx: A farmer's rash that worsened with topical corticosteroid

Derm Dx: A farmer's rash that worsened with topical corticosteroid

A farmer, aged 76 years, presents with a moderately pruritic rash on his chest that became worse when he used ...

Derm Dx: Dermatitis over the torso that looks like an allergic reaction

Derm Dx: Dermatitis over the torso that looks like an allergic reaction

A 28-year-old woman presents with a 3-week history of a minimally pruritic dermatitis involving her chest, back, and abdomen. It ...

Derm Dx: A new growth on a woman who has had skin cancer

Derm Dx: A new growth on a woman who has had skin cancer

A 59-year-old woman presents with a 3-month history of a growth on her forearm. She is a cigarette smoker and ...

Derm Dx: Is this Lyme disease?

Derm Dx: Is this Lyme disease?

A 20-year-old college student tests negative for Lyme disease but is placed on doxycycline. She questions the treatment and why ...

Derm Dx: A waxy, yellowish plaque since birth

Derm Dx: A waxy, yellowish plaque since birth

A 3-month-old male presents with a waxy, yellowish 3-cm plaque located on his scalp since birth.

Derm Dx: Deeply hyperpigmented, slightly raised papules

Derm Dx: Deeply hyperpigmented, slightly raised papules

A 30-year-old woman presents with a 2-month history of a pruritic eruption on her legs and back.

Derm Dx: Penile lesions in an HIV-positive man

Derm Dx: Penile lesions in an HIV-positive man

A 52-year-old, HIV-positive man presents with penile lesions that have persisted despite treatment with acyclovir.

Derm Dx: Linear dermatosis that follows the lines of Blaschko

Derm Dx: Linear dermatosis that follows the lines of Blaschko

A 3-year-old boy presents with linear bands of slightly hypopigmented papules that follow the lines of Blaschko.

Derm Dx: Striking pigmentation on a former chemical plant worker

Derm Dx: Striking pigmentation on a former chemical plant worker

A 43-year-old man who has impaired mentation and currently resides in an extended-care facility is being followed for discoid lupus ...

Derm Dx: Recurring rash after sun exposure

Derm Dx: Recurring rash after sun exposure

A 62-year-old woman presents for evaluation of a rash affecting both arms.

Derm Dx: Asymptomatic growth on nose

Derm Dx: Asymptomatic growth on nose

A 47-year-old woman requests evaluation for a growth on her nose.

Derm Dx: Painful lesion of the ear

Derm Dx: Painful lesion of the ear

A 68-year-old man comes to the clinic complaining of a painful lesion affecting his right ear.

Derm Dx: Dark spots on the lip

Derm Dx: Dark spots on the lip

A 33-year-old woman requests consultation for dark spots that have been present on her lip for several years.

Derm Dx: An asymptomatic papule on the thigh

Derm Dx: An asymptomatic papule on the thigh

A 55-year-old woman seeks consultation for a lesion on her left thigh.

Derm Dx: Multiple white papules on the penis

Derm Dx: Multiple white papules on the penis

A 30-year-old African-American man is evaluated for lesions on his penis.

Derm Dx: A hyperkeratotic plaque on the left temple

Derm Dx: A hyperkeratotic plaque on the left temple

A 63-year-old male was referred for evaluation and treatment of a lesion that arose on his left temple.

Derm Dx: A nodule on the forearm

Derm Dx: A nodule on the forearm

A 70-year-old man requests treatment for a lesion of his left forearm.

Derm Dx: A lesion on the lip

Derm Dx: A lesion on the lip

A 55-year-old man requests removal of a lesion affecting the vermilion border of his left lip commissure.

Derm Dx: A rare type of urticaria

Derm Dx: A rare type of urticaria

A 30-year-old man presents with a 5-year history of an episodic rash.

Derm Dx: A nodule on the scalp since childhood

Derm Dx: A nodule on the scalp since childhood

A 39-year-old woman requests removal of a growth on her scalp.

Derm Dx: Asymptomatic hyperkeratotic papules

Derm Dx: Asymptomatic hyperkeratotic papules

A 51-year-old man with limited mentation is referred for evaluation of 2 papules on his back.

Derm Dx: A large ulceration and tortuous varicosities

Derm Dx: A large ulceration and tortuous varicosities

A 90-year-old woman presents for evaluation and treatment of an ulceration that has been on her left leg for >1 ...

Derm Dx: A lesion on the scalp

Derm Dx: A lesion on the scalp

The patient is an 86-year-old woman who presents for evaluation of a growth on her scalp.

Derm Dx: An uncommon neoplasm

Derm Dx: An uncommon neoplasm

A 63-year-old white woman presents for evaluation of a bump on her left foot.

Derm Dx: Comedones on the cheeks

Derm Dx: Comedones on the cheeks

A 79-year-old man presents for treatment of a forehead cyst that has been excised surgically.

Derm Dx: An uncommon pruritic eruption

Derm Dx: An uncommon pruritic eruption

A 53-year-old nurse presents for evaluation of a minimally pruritic eruption affecting her arms and legs that has been present ...

Derm Dx: Plaques, joint deformity of the hands

Derm Dx: Plaques, joint deformity of the hands

A 45-year-old woman with a previously diagnosed pruritic skin condition presents with significant joint deformity that has developed slowly over ...

Derm Dx: A farm worker with a growing lesion

Derm Dx: A farm worker with a growing lesion

A 70-year-old man presents with a 1-month history of an enlarging, irregularly pigmented macule on his forehead.

Derm Dx: Warty plaques in a unilateral pattern

Derm Dx: Warty plaques in a unilateral pattern

A 13-year-old boy presents with nonpruritic, hyperpigmented warty papules and plaques.

Derm Dx: Intensely itchy purple papules

Derm Dx: Intensely itchy purple papules

A 32-year-old woman presents with a 3-week history of an itchy rash covering her whole body.

Derm Dx: Papules and multiple endocrine neoplasia type 1

Derm Dx: Papules and multiple endocrine neoplasia type 1

A 32-year-old white woman with a history of multiple endocrine neoplasia type 1 presents with multiple oval hypopigmented papules on ...

Derm Dx: Pruritic hyperpigmentation of the lips

Derm Dx: Pruritic hyperpigmentation of the lips

A 22-year-old woman presents with pruritic hyperpigmentation of her upper and lower lips that began approximately 2 weeks previously.

Derm Dx: Erythematous nodules after heart transplant

Derm Dx: Erythematous nodules after heart transplant

A 50-year-old woman who previously underwent a heart transplant presents to the clinic with nonpainful, nondraining erythematous nodules on her ...

Derm Dx: Refractory dermatitis in a man on chemotherapy

Derm Dx: Refractory dermatitis in a man on chemotherapy

Chemotherapy was initiated in a 68-year-old man with metastatic lung cancer.

Derm Dx: A pruritic eruption on the ankles

Derm Dx: A pruritic eruption on the ankles

A 42-year-old man presents with an intensely pruritic eruption affecting both ankles for approximately 2 weeks.

Derm Dx: A well-demarcated erythematous patch

Derm Dx: A well-demarcated erythematous patch

A 76-year-old woman who resides in an extended-care facility presents with a several-month history of rash involving her right buttock.

Derm Dx: Hyperkeratotic lesions of the palms and soles

Derm Dx: Hyperkeratotic lesions of the palms and soles

A 58-year-old African American man presents with multiple hyperkeratotic lesions on his palms and soles.

Derm Dx: Widespread salmon-colored patches

Derm Dx: Widespread salmon-colored patches

A 68-year-old man is referred to a podiatry clinic for evaluation and treatment of a nail condition manifested as distal ...

Derm Dx: Trunk dermatitis that does not fluoresce under Wood's light

Derm Dx: Trunk dermatitis that does not fluoresce under Wood's light

An African American man, aged 38 years, presents for evaluation of an extensive rash involving his chest and back.

Derm Dx: Cystic nodule on a man's forearm

Derm Dx: Cystic nodule on a man's forearm

A 58-year-old man requests removal of a lesion on his left forearm.

Derm Dx: Mid-scalp alopecia in a woman

Derm Dx: Mid-scalp alopecia in a woman

An African American woman, aged 48 years, presents with marked alopecia of her mid-scalp that has progressed over several years.

Derm Dx: Redness on a woman's face and torso

Derm Dx: Redness on a woman's face and torso

A woman presents with a rash that has developed on her face and upper torso.

Derm Dx: Scaling hyperkeratosis of one hand and both feet

Derm Dx: Scaling hyperkeratosis of one hand and both feet

A 58-year-old man requests evaluation for dermatitis that has been affecting his right hand for more than 1 year.

Derm Dx: Erythematous, indurated, follicular dermatitis on the shin

Derm Dx: Erythematous, indurated, follicular dermatitis on the shin

A 45-year-old woman presents with an itchy rash on her right leg.

Derm Dx: A recurring firm and hyperpigmented nodule

Derm Dx: A recurring firm and hyperpigmented nodule

A 45-year-old woman who is moderately obese presents with a recurrent lesion on her left leg.

Derm Dx: Rectal rash preceded by pain in an elderly man

Derm Dx: Rectal rash preceded by pain in an elderly man

A 71-year-old man presents for evaluation of a rash affecting his rectum and right buttock.

Derm Dx: Erythematous patches and plaques on a woman's forehead

Derm Dx: Erythematous patches and plaques on a woman's forehead

A 41-year-old fair-skinned woman requests a consultation for a rash that developed on her upper forehead more than 1 year ...

Derm Dx: Red lesions on the interphalangeal joints of the hands

Derm Dx: Red lesions on the interphalangeal joints of the hands

A 43-year-old white female presents with red lesions on her hands.

Derm Dx: Mass under the skin of the index finger

Derm Dx: Mass under the skin of the index finger

A 60-year-old woman presents for evaluation of a mass affecting her left index finger.

Derm Dx: Traumatized erythematous papule above the eyebrow

Derm Dx: Traumatized erythematous papule above the eyebrow

A man, aged 45 years, presents with a lesion above his right eyebrow that was recently traumatized.

Derm Dx: Growing hyperpigmented lesion on an elderly Hispanic male

Derm Dx: Growing hyperpigmented lesion on an elderly Hispanic male

An 80-year-old Hispanic male presents for evaluation of a lesion on the right side of his face.

Derm Dx: Hyperkeratotic central plaque on the arm

Derm Dx: Hyperkeratotic central plaque on the arm

A 58-year-old male presents for evaluation and treatment of a lesion on his arm that was first noted approximately 4 ...

Derm Dx: Nasal lesion with starburst pattern on dermoscopy

Derm Dx: Nasal lesion with starburst pattern on dermoscopy

A 3-year-old male presents for evaluation of a lesion on his nose that was first noted approximately 6 months ago ...

Derm Dx: Crusting and scaling of the skin in a nursing home resident

Derm Dx: Crusting and scaling of the skin in a nursing home resident

Dermatological consultation is requested for a 78-year-old woman residing in a nursing home.

Derm Dx: Erythematous, annular patch with atrophic center

Derm Dx: Erythematous, annular patch with atrophic center

A 79-year-old man presents with a recurring, asymptomatic lesion of his right foot.

Derm Dx: Semi-translucent tumor on the finger

Derm Dx: Semi-translucent tumor on the finger

A 59-year-old woman presents with a tender bump on her right middle finger.

Derm Dx: Rash that the patient suspects is Lyme disease

Derm Dx: Rash that the patient suspects is Lyme disease

A man, aged 64 years, presents for evaluation of an asymptomatic rash that developed on his left medial mid-thigh 3 ...

Derm Dx: Dark patches on the chin, trunk, arms, and thighs

Derm Dx: Dark patches on the chin, trunk, arms, and thighs

A 32-year-old Hispanic female presents requesting treatment for “dark spots” on her chin, trunk, arms, and thighs.

Derm Dx: Asymptomatic dermatitis that feels like sandpaper

Derm Dx: Asymptomatic dermatitis that feels like sandpaper

A 29-year-old woman presents with multiple folliculocentric keratotic papules that feel like sandpaper.

Derm Dx: Red papule following puncture by rose thorn

Derm Dx: Red papule following puncture by rose thorn

A lesion on a woman's finger that arose shortly after it was punctured by the thorn of a rose.

Derm Dx: Annular, erythematous patches

Derm Dx: Annular, erythematous patches

Multiple annular, erythematous patches and plaques scattered on the upper and lower extremities and trunk.

Derm Dx: Red, itchy groin rash

Derm Dx: Red, itchy groin rash

A malodorous, red eruption on the intertiginous folds.

Derm Dx: Diffuse nodularity of the scalp

Derm Dx: Diffuse nodularity of the scalp

The patient is a 25-year-old black male who seeks medical consultation for a scalp disorder.

Derm Dx: A blistering rash on the abdomen, thighs

Derm Dx: A blistering rash on the abdomen, thighs

A patient in a nursing home develops a blistering rash on the abdomen and thighs.

Derm Dx: Red, subcutaneous nodule on an infant's scalp

Derm Dx: Red, subcutaneous nodule on an infant's scalp

An 8-month-old female was referred by her pediatrician for evaluation of a red lesion that has been present on her ...

Derm Dx: Hand dermatitis with excess hair growth on the cheeks

Derm Dx: Hand dermatitis with excess hair growth on the cheeks

A construction worker aged 38 years presents for evaluation of a hand dermatitis that has waxed and waned in ...

Derm Dx: Severely dry skin

Derm Dx: Severely dry skin

An inmate aged 29 years is referred for teledermatology evaluation to treat severely dry skin.

Derm Dx: Acute asymptomatic eruptions on feet

Derm Dx: Acute asymptomatic eruptions on feet

The patient is a physician aged 34 years who developed acute, asymptomatic eruptions on both the lateral aspect of his ...

Derm Dx: Malar rash on the cheeks

Derm Dx: Malar rash on the cheeks

A 6-year-old girl presents with fever and a rash on her body and face.

Derm Dx: Multiple patches on the back of nursing home resident

Derm Dx: Multiple patches on the back of nursing home resident

A patient, aged 86 years, who resided in a local nursing home was referred for an evaluation of an enlarging ...

Derm Dx: Bright plaques, papules on the thumb

Derm Dx: Bright plaques, papules on the thumb

A patient presented for evaluation of a rash on his dorsal proximal right thumb and right wrist. Can you diagnose ...

Derm Dx: Deformed ear

Derm Dx: Deformed ear

A patient, aged 15 years, presented for evaluation of a deformed ear of recent onset.

Derm Dx: Irregular, discolored brown spot on the cheek

Derm Dx: Irregular, discolored brown spot on the cheek

A patient, aged 88 years, presented for evaluation of a brown spot on her cheek. Can you diagnose the condition?

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