hi there...
Good to have a friend concerned for another.
Off the cuff doesn't appear to be concerning but if it is present since 4-5 months, best to visit a Dermatologist and get a biopsy done.
Alternatively, an INSTANT ONLINE Consultation will help put your mind at rest 🙏
Health Tips
Avoid OTC products, home remedies and self medication and consultation with Dr Google 🙏