Hello Use of machine can reduce your pain and swelling, you can ask your physiotherapist for therapy for Carpal tunnel syndrome. Use ice packs to reduce inflammation . Physiotherapy with ultrasound and Tens will help you, For early healing you can take Tab celin [vit C] and antioxidant with anti-inflammatory [Tab enzomac plus ]. Blood mark black indicate venous congestion,you may need cllinical examination to confirm it. Hope this answers your query. If you have additional questions or follow up queries then please do not hesitate in writing to us. I will be happy to answer your queries. Wishing you good health. Take care