My child had a mri with contrast in which he was under anesthesia for several hours, about 2 days later, he had swelling and redness in one area of the back of his head. Then after one week, the hair in that area gel out??? Could that be from the contrast?
No. Contrast will be given through intravenous administration. And side effects of contrast will be on kidneys like low urine output or dark color urine. The hair patch could be due to some fungal infections. Consult dermatologist for opinion