Capillaritis as a Skin Manifestation of Hepatosplenic Gamma-Delta T-Cell Lymphoma.

We present the case of a 10-year-old boy who was admitted with 3 months of episodic febrile neutropenia and a new petechial rash. Routine bloods identified neutropenia, thrombocytopenia, and a raised alanine aminotransferase. The dermatology team was consulted in light of the symmetrical petechial eruption of the upper torso.

Melanin has a Small Inhibitory Effect on Cutaneous Vitamin D Synthesis: A Comparison of Extreme Phenotypes.

Epidemiology suggests that melanin inhibits cutaneous vitamin D synthesis by UVR. Laboratory investigations assessing the impact of melanin on vitamin D production have produced contradictory results. We determined the effect of melanin on vitamin D photosynthesis in healthy young volunteers (n = 102) of Fitzpatrick skin types II-VI (white to black).

Spontaneous painful subungual thumb haematoma.

We present the case of a 56-year-old man who presented to our accident and emergency department 15 years after a work-based injury to his left thumb.In January 2017, the patient was woken up acutely with excruciating pain in his left thumb with no preceding trauma. On clinical examination, only a subungual haematoma was noted.