<s>[INST] I have a red rash with pin point red dots on the back of my lower legs. I noticed the red dots about a week ago that went away. Then 2 days ago after walking for about 8 hours in warm weather found a rash up both legs to about mid calf. The rash had little pain but I feel a little but like there is pressure in my ankles and lower legs when walking or standing. The rash is blotchey and has the red dots. No itching or pain. 38 year old male 6 feet 1 in tall 235 lbs. Walks 4 times a week for long distances. [/INST] Hi, I think that you may have the type of purpuric dermatosis or simple ecchymoses of unknown cause. Consult the dermatologist for the perfect diagnosis and proper treatment. Vitamin C tablets and vitamin K tablets may be taken. Hope I have answered your query. Let me know if I can assist you further. </s>