Eyes

Here Dentists can diagnose periocular tumours including Syringomas, BCCs, SCC,  Pilomatrixoma, Sebaceous carcinoma and Xanthelasma
Juvenile xanthogranuloma is also diagnosable by it's yellow colour.
They may also note eyebrow hair loss or even head lice on the eyelashes.

So I will concentrate on conditions seen around the eyes and eyelids including the eyebrows.

Tumours

BCC

SCC

Syringoma

Sebaceous carcinoma

Meibomian cyst

Apocrine and Eccrine Hydrocystoma

Juvenile xanthogranuloma

Necrobiotic xanthogranuloma

Desmoid cyst

Lipoid proteinosis

Infections

Stye

Periocular herpes

Eczema

Atopic

Contact allergic

Seborrhoeic

Peri ocular dermatitis

Blepharitis


Eyebrows 

Loss of lateral third

Complete loss