Epilepsy and intellectual impairment may be associated. [patient.info]

In rare cases, the condition may be associated with neurological conditions such as epilepsy. Additionally, tumors may form within lesions, and may be either benign or malignant. [ozarkderm.com]

In this age group, NF1 usually manifests as isolated multiple café au lait spots, which are highly suggestive but not specific for NF1. 7 - 9 Additional cutaneous manifestations may occur in children with NF1: juvenile xanthogranulomas (JXG) and nevus [jamanetwork.com]

Juvenile xanthogranuloma was defined as asymptomatic yellow-brown papules or nodules, without Darier sign (swelling or redness on rubbing). Nevus anemicus was defined as hypochromic macules devoid of vasodilation on friction. [jamanetwork.com]