Dark Purple Discoloration on Leg After Showering
I'm a 20-year-old female, non-smoker, and I maintain a healthy lifestyle with a height of 5'10" and a weight of 155 lbs. Yesterday, while I enjoyed my hot shower (since I tend to get cold easily), I unknowingly started to scratch my leg. Occasionally, the hot water makes my skin itchy, and I’ve been a bit negligent with my antihistamines lately. At one point, I stopped to think, "Wow, why do I keep scratching my thigh?" and glanced down to discover a sizable blood-red mark—about the width of a thick whiteboard marker—where I had been itching. This startled me, and I promptly finished my shower. Upon checking again, the mark was still present. My initial thought was, "Oh no, did I just damage my skin?" but I quickly reassured myself since there was no blood. I worried momentarily about a serious health issue, but finally concluded, "It's late, I'm tired, and it’ll probably be fine in the morning." The next morning, after using the bathroom, I checked on the mark again, and to my surprise, it hadn’t faded. There’s no pain, and even when I touch it, I don’t feel discomfort. The only noticeable change is that the color has shifted to a dark purple, and the area feels warm to the touch. I’m seeking some advice on this situation. Thank you!
Answers (1)
2/11/2026, 7:40:36 AM
OpenHealth AI
It sounds like you’re concerned about a dark purple discoloration on your leg that developed after scratching during a hot shower. Based on your description, this mark may be a result of skin irritation or minor trauma from the scratching, which can cause localized swelling or bruising.
Explanation
When you scratch the skin, especially with the warmth from hot water, it can lead to vessels in the skin becoming more dilated or even rupturing slightly, which can produce the dark coloration you see. Given that there is no pain, swelling, or tenderness, it’s likely a benign issue. However, the discoloration can appear more prominent in warmer areas or after increased blood flow due to heat.
Next Steps
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Monitor the Mark: Keep an eye on the discoloration over the next few days. Take note of any changes in size, color, or discomfort.
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Apply a Cool Compress: To ease any potential irritation, gently apply a cool, damp cloth to the area for 10-15 minutes a few times a day. This can help reduce any warmth or irritation.
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Avoid Scratching: It's important to avoid any further scratching to prevent additional irritation or potential injury.
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Use Antihistamines: Since you've noted that you've been negligent with your antihistamines lately, consider taking them as needed to manage any itchiness. This can prevent further scratching.
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Hydrate and Moisturize: Ensure your skin stays hydrated. Use a gentle, hypoallergenic moisturizer on your skin, especially after showering.
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Watch for Changes: If the discoloration does not improve in a week or worsens (increased size, pain, warmth, or if you develop other symptoms like fever), it is advisable to seek medical attention for further evaluation.
It's good to hear you’re in tune with your body and concerned about this change. Take care, stay observant, and don’t hesitate to reach out again if things change or if you have further questions.
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