Senile purpura https://en.wikipedia.org/wiki/Solar_purpura
Senile purpura est conditio cutis magna, 1–5 cm, ecchymoses purpureo‑rubrata, in dorso ulnarum et manuum apparentia. Laesio purpurica causatur ex solis detrimento textus connectivi in cute. Nulla curatio necessaria est. Laesiones typice defluunt intra spatium usque ad tres septimanas.

Curatio
Maximum est non adhibere unguenta steroidea.

Informationes plurimae ― Latine
References Actinic Purpura 28846319 
NIH
Purpura actinica fit cum sanguis effluat in stratis cutis profundioribus. Saepe occurrit in senioribus cum pellibus tenuissimis et vasis sanguineis fragilibus, praesertim si multum solis subiecti sunt.
Actinic purpura results from the extravasation of blood into the dermis. This phenomenon is due to the skin atrophy and fragility of the blood vessels in elderly individuals, which is exacerbated by chronic sun exposure.