Miscellaneous Flashcards
Dermatology, Immunizations, Rheumatology
Features of this genetic condition include:
- micrognathia, abnormal external ears, clenched hands with overlapping fingers, increased muscle tone, low birth weight, single umbilical artery, short palpebral fissures, nail hypoplasia, and congenital heart defects (ventricular septal defect, atrial septal defect, and patent ductus arteriosus)
Trisomy 18
sloping forehead with holoprosencephaly, microphthalmia, cleft lip or palate, and polydactyly
Trisomy 13
Hemangioma involution
50% by 5 years
70% by 7 years
90% by 9 years
GLUT-1 positive
Hemangiomas
- Tufted Angiomas
- Thrombocytopenia
- Consumptive Coagulopathy
- Microangiopathic Hemolytic Anemia
Kasabach-Meritt (KHE, Tufted Angioma)
- Multiple hemangiomas of skin
- GI, Pulmonary, CNS, Liver Angiomas
Neonatal Hemangiomatosis
- Posterior fossa CNS abnormalities
- Hemangioma in V1 facial distribution
- Arterial anomalies –> seizures/stroke
- Cardiac defects
- Eye abnormalities (microphthalmia)
- Sternal clefting
PHACES Syndrome
- 90% F
- Ulceration of softe tissue
- Port Wine Stain in V1
- Hypertrophic soft tissue
- Glaucoma
- Meningeal Angioma
SWS
Lumbosacral hemangiomas
Tethered cord, intraspinal lipomas
Liver hemangiomas
HM, CHF, anemia and thrombocytopenia
Hypothyroidism
- Most common vascular birthmark
- On face and nape of neck, symmetrical about midline
- Present at birth
- Facial lesions usually resolve within one year
- Nuchal lesions persist in 50%
Salmon Patch
- Present at birth
- Grows with the child, darkens with age, becomes cobblestoned with soft tissue hypertrophy
Port Wine Stains (Nevus flammeus)
Rx: Pulse Dye Laser
- PWS
- Limb hypertrophy
- Venous and lymphatic malformations
- GI and bladder angiomas
Klippel Trenaunay
- Acquired vascular lesion
- Common on extremities, face
- Red papule that bleeds easily
- Need to remove
Pyogenic Granuloma (Lobular Capillary Hemangioma)
- Benign melanocytic lesion
- Dome-shaped, red to yellow to brown color
Spitz Nevus
- Very low risk of malignancy, but a malignant melanoma can mimic a spitz nevus
- Not present at birth, appears at 24 hours of age
- Papule or pustule with urticarial base
- Lasts 2-3 weeks
- See eosinophils if examine content of vesicle
Erythema Toxicum
- Presents with 2-3mm vesicles
- Vesicles rupture within hours, leaving a collaret of scale, followed by a hyperpigmented macule that lasts for months
- More common in African Americans
- Neutrophils without bacteria seen inside vesicle
Transient Neonatal Pustular Melanosis
Normal mottled response to cold
Cutis Marmorata
- Developmental disorder of capillaries and veins
- Often localized to one extremity, coarser texture
- Associated with glaucoma, cleft lip, mental retardation, syndactyly, hypothyroidism and dystrophic teeth
Cutis Marmorata Telangiectatica Congenita
- Indurated, non-tender plaque with patchy erythema appearing in the first few weeks of life
- Probably 2/2 trauma
- Resolves spontaneously
- May have associated hypercalcemia, leading to irritability, constipation, FTT, seizures
Subcutaneous Fat Necrosis
- Onset at 2-4 weeks of age, resolves by 3 months
- Papules and pustules without comedomes
- No treatment needed
- Some cases of “acne” are actually a folliculitis caused by Pityrosporum
Neonatal Acne
Acne that has a later onset or is prolonged, may be severe and require evaluation of androgens, Infantile acne
Dermatitis on interdigital/arch of foot
Tinea pedis
Dermatitis on weight-bearing surface of foot
Juvenile Plantar Dermatosis
Dermatitis on dorsum of foot
Contact dermatitis
Why should you not use oral ketoconazole?
Risk of fatal hepatitis
1st line treatment for onychomycosis
Itraconazole or Terbinifine x 4-6 months
- Adolescents
- Warm, humid weather
- Confluent macules of varying color with mild scale, upper body and occasionally on face
- KOH = spaghetti and meatballs
Tinea versicolor
- Treat with topical selenium or zinc shampoos
- Oral ketoconazole, itraconazole or fluconazole can be used
Looks like tinea without superficial scale
Granuloma Annulare
- No treatment needed
Two serious rare side-effects of Minocycline
Autoimmune hepatitis and SLE
Normal amount of hair loss/day
50-100 scalp hairs/day
Anagen Effluvium
- Marked decrease in production of new hairs (anagen phase) leading to profound hair loss
- 2/2 chemo or radiation
Telogen Effluvium
- Diffuse thinning of hair
- Increased % of telogen hair
- Hair grows back completely within months