I am male, 74 been diagnosed with ET, JAK2+ 6 years ago, platelets last count 434. Taking weekly cycle 1,000mg hydrea 4 days, 1,500mg 3 days. I had a gripe some months ago regarding the above and received much welcomed replies. Since then as soon as I do anything involving exercise when the weather is warm , like mowing the grass; these red blotches appear on my lower arms. My doctor says they are tiny blood vessels rupturing. My question is how can we, if at all possible, alleviate this condition. All my casual short sleeved shirts stay in the wardrobe for fear of comments and having to explain away these unsightly blotches.