Skinfold freckling is another important criterion for the diagnosis of NF1. It occurs between the ages of three and five in either the axilla and groin. They may also be on the neck, breast, around the lips, and in the trunk. The freckling is similar to that induced by sun exposure, but it occurs remarkably in covered areas.

This site offers information designed for educational purposes only. You should not rely on any information on this site as a substitute for professional medical advice, diagnosis, treatment, or as a substitute for, professional counseling care, advice, diagnosis, or treatment. If you have any concerns or questions about your health, you should always consult with a physician or other healthcare professional.