SalonCompass

Cancer & cancer treatment

Dark stripe under a nail (Suspected, not yet assessed) — beauty treatment safety

Also called Suspected subungual melanoma (longitudinal melanonychia), dark stripe under nail, black line in nail, subungual melanoma, longitudinal melanonychia, brown line down my nail, bruise under nail that will not grow out.

In short

Dark stripe under a nail is waiting on sign-off from a doctor, so this page carries no safety ratings. What it does carry is the background reading and the named medical sources behind it.

Sources

  1. British Association of DermatologistsSkin cancer (BCC, SCC, melanoma) clinical guidelines and patient information
  2. National Cancer InstituteSubungual melanoma — clinical reference
  3. Peer-reviewed (Levit et al.)ABCDEF criteria for nail unit melanoma

Written by · London-trained cosmetologist

Last updated