Naevus vascularis mixtus and mixed vascular naevus syndrome

Naevus vascularis mixtus (NVM), or mixed vascular naevus (MVN), is a binary phenotype resulting from allelic twin spotting, consisting of a naevus anaemicus paired with a telangiectatic naevus reminiscent of naevus roseus, and caused by a mosaic GNA11 mutation. MVN syndrome is characterized by an NVM associated with soft tissue hypotrophy or central nervous system abnormalities, mainly involving the cerebral vasculature. The differential diagnoses of NVM and its syndrome include vascular twin naevi, syndromes featuring naevus flammeus and other port‐wine naevi, and the various types of phacomatosis pigmentovascularis. NVM and MVN syndrome are rare but probably underdiagnosed and under‐reported.     

Naevus sudoriferus (local eccrine hyperhidrosis)

Naevus sudoriferus (local hyperhidrosis) or ephidrosis, in an 8-year-old girl is presented. The symptoms consisted of sweating in an area on the dorsal aspect of the right forearm and had been present for approximately 1 year. Episodes of hyperhidrosis occurred 2–4 times daily. The diagnosis was supported using the starch-iodine sweat test, which delineated the area of sweat dysfunction, The patient was treated topically with aluminium chloride solution.     

Ein eigenartiger Fall von Naevus ad genitale et ad anum (Naevus xanthelasmoides)

Ohne ZusammenfassungHiezu Taf. XIII.     

Acquired naevus flammeus (Fegeler syndrome)

In contrast to common port-wine stains, acquired port-wine stains are extremely rare. We report on an acquired port-wine stain that evolved on the thigh of a 69-year-old male patient and was accompanied by lumbalgia on the same side. Impairment of vegetative nerve fibres by spinal root compression may be considered a causative factor in our patient.