nonvascular birthmarks

Question 1

connective tissue nevus

Answer 1

skin colored to yellow nodules/plaque on trunk/limbs
Tx none
think shagreen’s patch in TS and cutaneous lesions in Proteus syndrome & Buschke Ollendorff

Question 2

congenital smooth muscle hamartoma

Answer 2

hyperpigmented plaque with hypertrichosis of the lower back/sacrum
Tx none needed
akin to Becker’s nevus histologically (presence of smooth muscle bundles in dermis)

Question 3

nevus simplex “salmon patch”

Answer 3

very common (~50% of all newborns)
variants include stork bite (occiput), angel's kiss (glabella)
Most resolve with time except for occipital lesions
Tx none needed, but may use PDL

Question 4

dermal melanocytosis

Answer 4

seen in SOC patients
variants include Mongolian spot, nevus of Ito(trunk)/ota (face), and PPV
Tx none needed, but may use NdYAG, ruby, alexandrite basically q switched lasers
Sacral lesions tend to fade/disappear with time while other sites may persist