Bet you didn't know that severe and intense pruritus of the nostrils, known as Wartenberg's symptom, is an uncommon but characteristic symptom of a brain tumor.
Etiologies include astrocytoma, glioblastoma, oligodendroglioma, medulloblastoma, and metastatic tumors.
References
1. Andreev VC, Petkov. Skin manifestations associated with tumors of the brain. Br J Dermatol1975;92:675
2. Mark Marinella, Pocket Brain of 50 Unusual Symptoms. Blackwell Publishing
