Sock line hyperpigmentation: an elasticated truth?

In March of this year I was involved in a case whereby unusual marks were noted on a 6-week-old child’s legs. The marks were very straight measuring about 2.5cm in length with triangular marks towards the end of the line. One of them curved around the calf muscle.

Within these linear marks there were very irregular patterns and some parts looked ‘saw tooth-like’. The marks were red but not raised. They were not blistered nor was the skin broken. It was initially suggested that the marks were caused by an object coming into contact with the skin. The local authority issued proceedings. The father suggested the marks were caused by tight fitting socks. Hello and welcome to the condition known as sock line hyperpigmentation (SLHP).

Two medical experts were instructed within the proceedings Dr Graham-Browne emeritus consultant and honorary senior lecturer in dermatology with a specialist interest in paediatric dermatology and Dr Lee retired consultant paediatrician.

Dr Graham-Browne opined that...

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