Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Red-flag signs for detailed investigations of RAS
| Category | Red-flag Signs |
|---|---|
| History |
Concomitant genital/skin ulcers Systemic signs suggestive of autoimmune disorders Drug / food allergy |
| Ulcer related |
Frequent recurrences (in weeks or every month) Non-healing or longer time for healing (> 6 weeks) Necrotic ulcer base Irregular ulcer margin (non-characteristic ulcer) Mixed ulcers Ulcers on keratinized mucosa |
