About Michael Cashman
Michael was born in Washington DC, graduated from Vassar College, and is currently a medical student at the George Washington University School of Medicine and Health Sciences. He decided to pursue dermatology during his final third-year clerkship, and split his fourth year in order to gain more research and clinical experience. His interests within dermatology include general dermatology, cutaneous microbiology, skin cancer awareness, global health and resident education via teledermatology. He is involved in a number of research projects, including observing the incidence of secondary infections as complications of skin biopsies in the lower extremities of diabetics. When he is not studying medicine, he holds a part-time job with the Health Promotions Department at the Virginia Hospital Center, tutors nursing students in anatomy, physiology and pharmacology, and volunteers at the Arlington Free Clinic. In his spare time, he enjoys raising his new puppy Dexter, tennis, volleyball, and eating – especially his mom’s kimchi and bulgogi.
Tinea of the nail refers to a fungal infection of the nail plate (where one applies polish) of the finger or toe. This infection is often found in association with tinea pedis. Another name for this diagnosis is onychomycosis. Toenails, … Continue reading →
Posted in Skin
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Tagged culture, distal subungual pattern, fungus, histologic, HIV, infection, KOH prep, nail, nail clipping, nail plate, Onychomycosis, PAS, periodic acid-Schiff, potassium hydroxide, proximal subungual pattern, subungual, tinea, unguium, white superficial pattern
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Tinea of the scalp is caused by dermatophytes that invade the skin of the scalp and its hair follicles. Who gets it? Tinea capitis occurs more often in prepubertal children and infection has a peak incidence in the first decade … Continue reading →
Posted in Skin
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Tagged Alopecia, boggy, capitis, culture, dandruff, follicle, fungus, Hair, infection, inflammatory tinea capitis, kerion, KOH prep, non-inflammatory tinea capitis, potassium hydroxide, pustular type, scalp, scarring alopecia, seborrheic dermatitis type, tinea, Woods lamp
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Tinea of the beard is a dermatophyte infection of the skin and hair follicles located in the bearded areas of the head and neck. It is a slowly evolving disease and infection of the skin causes itchiness while infection of … Continue reading →
Posted in Skin
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Tagged animal transmission, barbae, beard, crust, culture, deep, fungus, Hair, hair follicle, infection, KOH prep, men, nodule, potassium hydroxide, superficial, tinea, zoophilic
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Tinea corporis refers to a dermatophyte infection of the face (excluding the beard area in men), trunk, arms, or legs. Who gets it? Anyone can get tinea corporis. Infections occur more commonly in patients who live in warmer climates, and … Continue reading →
Tinea cruris refers to a dermatophyte infection of the crural fold located in the groin. This fungal infection is commonly refered to as “jock itch”. Who gets it? Jock itch occurs almost exclusively in postpubertal male patients. It often occurs … Continue reading →
Posted in Skin
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Tagged buttocks, crural folds, cruris, culture, fungus, gluteal cleft, infection, jock itch, KOH prep, medial thighs, potassium hydroxide, tinea
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Tinea manuum refers to a dermatophyte infection of the hand. Who gets it? Tinea of the hand occurs almost exclusively in adults as children are rarely affected. The infection progresses very slowly over a period of weeks, months, or even … Continue reading →
Posted in Skin
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Tagged chronic scaly pattern, culture, dorsum, fungus, hand, infection, KOH prep, manuum, one hand two foot disease, palmar, potassium hydroxide, ringworm pattern, scales, silvery, tinea, white
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How do you envision ringworm? The belief that an actual worm causes this infection is a common misconception. Ringworm is a superficial fungal infection that can occur anywhere on the body. So how then, does this fungal infection get such a name? Read more for the answer and to learn about common fungal infections of the hair, skin, and nails. Continue reading →
Posted in Skin
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Tagged barbae, capitis, corporis, cruris, culture, fungus, infection, KOH prep, manuum, PAS, pedis, periodic acid-Schiff, potassium hydroxide, ringworm, tinea, unguium, Woods lamp
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Ethnic skin is a hot topic in dermatology. The AMA recently released a statement pledging to fully support and encourage efforts to increase awareness of skin cancer risks and screenings in communities of color. Dr. Lily Talakoub discusses this topic in more detail and how it impacts the field. Continue reading →
Did you know that fingernails grow about 2-3mm per month while toenails lag behind at 1mm per month? Did you know that complete replacement of a fingernail requires 6 months while a toenail requires 18 months? Does the nail still mystify you? Read this article to learn more about this elusive skin appendage. Continue reading →
Posted in Nails 101
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Tagged anatomy, cuticle, eponychium, germinative, hyponychium, keratin, lunula, matrix, nail, nail bed, nail plate, onycholysis, paronychia, proximal nail fold
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