My daughter woke up with this huge spot on her foot I don’t know what it could be. She’s been in pain and can’t move her foot what is this.. Explain this February 25, 2026January 16, 2026 by Youssef ADVERTISEMENT Symptoms to Expect A blood blister may cause: A raised, bubble-like area under the skin Dark red, purple, or black coloring Tenderness or pressure pain Occasional swelling around the area Most blood blisters are not dangerous and heal on their own within one to two weeks. Should You Pop a Blood Blister? ←PreviousNext→
