The first time you see it, your heart stops. A dark, swollen spot on your child’s tiny foot, painful to touch, and you don’t know why. Was it a shoe? A bite? Something worse? Every step they take looks like a struggle, every wince a warning. You’re told not to pop it, not to touch it, just watch and wa… Continues… You’re right to feel alarmed when a child’s foot suddenly shows a dark, painful, swollen area. It may be a blood blister from pressure, friction, or a minor injury, but its location, color, and the child’s pain level mean...
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