Unna stain Q82.5

Common fissural vascular hamartoma located in the neck (so-called nevus flammeus medialis). No proliferative tendency in asymmetric nevus flammeus. No associated symptoms.

However, the term "Unna spot" has historically been used twice and additionally describes a papillomatous melanocytic nevus, mostly localized to the neck, axillae, and groin. Clinically, it resembles seborrheic keratosis or fibroma pendulans.

Not required. If cosmetically disturbing, laser-therapeutic procedure, see below asymmetric nevus flammeus .

The so-called "Miescher's nevus", on the other hand, is a common melanocytic nevus, mainly located on the face, raised in a dome shape and mostly skin-colored, with occasionally increased hair growth.