Dermatology - Revision history

Aesetholephews: /* Dermatophytes */

2023-01-17T05:40:29Z

Dermatophytes

2023-01-17T05:30:47Z

Rosacea

2023-01-17T05:28:11Z

Psoriasis

2023-01-17T05:26:07Z

Contact Dermatitis

2023-01-16T16:33:56Z

Missed Concepts

2023-01-15T17:46:29Z

2023-01-15T01:21:50Z

Missed Concepts

2023-01-14T05:21:42Z

Missed Concepts

2023-01-14T00:52:01Z

Squamous Cell Carcinoma

2023-01-13T23:21:44Z

Erythema Nodosum

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 *H&P: Pruritic, well demarcated, central clearing.
 *Dx: Clinical, or with KOH prep. '''Tinea capitis is erythematous, scaly, pruritic, and associated with hair loss'''
-*Tx: Oral meds for onychomycosis (terbinafine) and tinea capitis (griseofulvin, itraconazole). Topical azaleas, terbinafine, or griseofulvin for others. Selenium sulfide for tinea versicolor.
+*Tx: Oral meds for onychomycosis (terbinafine) and tinea capitis (griseofulvin, itraconazole). Topical azoles, terbinafine, or griseofulvin for others. Selenium sulfide for tinea versicolor.
 =Basal Cell Carcinoma=

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 =Rosacea=
-*H&P: Fair skin, light-eyed people, with history of flushing. Erythema and inflamed papules on face, nose, forehead, chin without comedones, rhinophyma (enlarged irregularly textured nose) appears late. Conjunctival injection, eyelid telangiectasias, and dry eyes are also common.
+*H&P: Fair skin, light-eyed people, with history of flushing. Erythema and inflamed papules on face, nose, forehead, chin '''without comedones''', rhinophyma (enlarged irregularly textured nose) appears late. Conjunctival injection, eyelid telangiectasias, and dry eyes are also common.
 *Dx: Clinical. Ddx includes acne.
-*Tx: Topical metronidazole; oral doxycycline or minocycline; clonidine for flushing.
+*Tx: Topical metronidazole; '''oral doxycycline or minocycline'''; clonidine for flushing.
 =Erythema Multiforme=

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 =Psoriasis=
 *H&P: Immune mediated, probably genetic. Associated with arthritis of the DIP joints.
-*Dx: Well demarcated pink plaques on extensor surfaces, scalp, and gluteal cleft. Nails can have pitting and onycholysis (separation from nail bed).
+*Dx: Well demarcated pink plaques with silvery scale on extensor surfaces, scalp, and gluteal cleft. Nails can have pitting and onycholysis (separation from nail bed).
 *Tx: Topical steroids ('''low potency for face/intertriginous areas, high potency for extensor surfaces'''), vitamin D analogs, retinoids; For generalized (>30% of the body), use UVB or PUVA; severe cases ('''e.g. psoriatic arthritis''') warrant methotrexate, anti-TNF agents.

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 =Contact Dermatitis=
 *H&P: Can have a clear border (allergic, type IV hypersensitivity, e.g '''nickel''', poison ivy) or not (irritant, e.g. nickel, makeup, detergents).
-*Dx: Erythematous, pruritic, papules vesicles, sometimes with erosions, crusting, excoriations, and lichenification. Patch testing.
+*Dx: Erythematous, pruritic, papules and vesicles, sometimes with erosions, crusting, excoriations, and lichenification. Patch testing.
 *Tx: Avoid causative agents, cold compresses and oatmeal baths ± short course of topical steroids. For severe and widespread cases short course of oral steroids.

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 *Axillary skin tags are associated with obesity, diabetes, insulin resistance, and metabolic syndrome.
 *Desmoid tumors are slowly growing and locally recurring benign tumors.
 =Derm Terms=

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 =Derm Terms=
 *Macule/Patch, Papule/Plaque, Nodule/Tumor (2 cm cutoff), Vesicle/Bullae/Pustule
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 *Dx: ABCDEs for moles. Skin biopsy shows melanocytes with cellular atypia.
 *Tx: Surgical excision.

← Older revision		Revision as of 01:21, 15 January 2023
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	*Seborrheic dermatitis, presenting as '''erythematous, pruritic plaques with greasy scale on the scalp, central face, and ears''' is associated with Parkinson disease and HIV and is treated with selenium sulfide or ketoconazole shampoos.		*Seborrheic dermatitis, presenting as '''erythematous, pruritic plaques with greasy scale on the scalp, central face, and ears''' is associated with Parkinson disease and HIV and is treated with selenium sulfide or ketoconazole shampoos.
	*Axillary skin tags are associated with obesity, diabetes, insulin resistance, and metabolic syndrome.		*Axillary skin tags are associated with obesity, diabetes, insulin resistance, and metabolic syndrome.
		+	*Desmoid tumors are slowly growing and locally recurring benign tumors.

← Older revision		Revision as of 05:21, 14 January 2023
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	*Keloids are treated with '''intralesional glucocorticoids'''		*Keloids are treated with '''intralesional glucocorticoids'''
	*Seborrheic dermatitis, presenting as '''erythematous, pruritic plaques with greasy scale on the scalp, central face, and ears''' is associated with Parkinson disease and HIV and is treated with selenium sulfide or ketoconazole shampoos.		*Seborrheic dermatitis, presenting as '''erythematous, pruritic plaques with greasy scale on the scalp, central face, and ears''' is associated with Parkinson disease and HIV and is treated with selenium sulfide or ketoconazole shampoos.
		+	*Axillary skin tags are associated with obesity, diabetes, insulin resistance, and metabolic syndrome.

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 *H&P: Second most common skin cancer. Pink plaques with scale and erosions. Most SCC develops from '''actinic keratosis''', but other risk factors include smoking, immunosuppression, occupational exposures, and arsenic. Actinic keratosis presents as chronic, erythematous, scaly/gritty, discolored papules and rough plaques on sun-exposed areas of skin.
 *Dx: Skin biopsy
-*Tx: Surgical excision. Actinic keratosis can be treated with topical chemo or liquid nitrogen. Mohs for the face.
+*Tx: Surgical excision. '''Actinic keratosis''' can be treated with topical chemo or liquid nitrogen. Mohs for the face, '''ears, or areas of tight skin and cosmetic importance'''.
 =Melanoma=

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 =Erythema Nodosum=
-*H&P: F>M. Causes remembered with mnemonic NoDOSUM—None, Drugs, OCPs, Sarcoidosis, Ulcerative colitis, Micro (strep, cocci, TB), most frequently presents on the shins as tender red/violet poorly demarcated nodules without ulceration. May have preceding fever, malaise, myalgias
+*H&P: F>M. Causes remembered with mnemonic NoDOSUM—None, Drugs, OCPs, Sarcoidosis, Ulcerative colitis, Micro (strep, cocci, TB). Most frequently presents on the shins as tender red/violet poorly demarcated nodules without ulceration. May have preceding fever, malaise, myalgias
 *Dx: Clinical. Ddx includes cellulitis, trauma, thrombophlebitis
 *Tx: NSAIDs; potassium iodide or systemic corticosteroids for severe cases