acquired pigmentary disorder of skin and hair with depigmented skin patches
frequently associated with other autoimmune conditions.
Chronic blepharitis
Post-inflammatory change from atopic or contact dermatitis especially if there is a history of eczema or dermatitis involving the periocular region.
Drug-induced
topical prostaglandin F(2α) analogues used for glaucoma, usually reversible poliosis
Skin lesions
Cutaneous/ocular malignant melanoma may rarely present with poliosis due to destruction of melanocytes adjacent to a melanoma; biopsy is required for diagnosis
Halo nevus or other benign nevus-associated poliosis
localized whitening of lashes adjacent to a melanocytic nevus.
Uveitis associated poliosis
Phthisis bulbi
Vogt–Koyanagi–Harada (VKH) disease
a multisystem autoimmune disorder
bilateral granulomatous uveitis, auditory symptoms, and meningeal signs.
Sympathetic ophthalmia is a bilateral granulomatous uveitis