Table 1.

Histopathological features of psoriatic alopecia and CCLE

	Psoriatic alopecia	CCLE
Epidermal changes	Parakeratosis1 Hypogranulosis1 Psoriasiform epidermal hyperplasia1	Epidermal atrophy and/or follicular hyperkeratosis Vacuolar alterations with apoptotic keratinocytes along the basal layer and frequently at the dermal-epidermal junction Thick basement membrane
Dermal changes	Focal peribulbar lymphocytic infiltrates with occasional eosinophils Dilated tortuous blood vessels1	Dense superficial and deep perivascular lymphoplasmacytic infiltrate with frequent periadnexal involvement Deep dermal mucin may be seen
Hair and adnexal structures	Increased catagen or telogen hairs1 Dramatic sebaceous gland atrophy1	Normal or increased number of catagen of telogen hairs Preserved sebaceous glands

¹The histopathological features that were found in our patient.