People with NF1 may have a number of pigmented spots on the skin known as "cafe-au-lait" spots because of their color. Benign growths called neurofibromas can develop throughout the body; this can cause bone abnormalities. The size and number of neurofibromas and cafe-au-lait spots are variable among people with NF1. People with NF1 may also have learning disabilities.
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