In 170 nails of patients with psoriasis,
65 nails had NAPSI score>0 (clinically evident) and 105 (clinically healthy) nails had NAPSI score =0.
Nails of healthy controls (Fig.1) 7 had decreased thickness of ventral plate with no deformities (7%),
20 (20%) had increased thickness of the nail bed,
3 had alteration of matrix (3%),
6 (6%) had increased vascularization signal.
Nails with NAPSI >0 (Fig.2) 46 had decreased thickness of ventral plate with deformation (70,7%),
36 had increased thickness of the nail bed (55,4%),
19 had alteration of matrix (29,2%),
33 had increased vascularization signal (50,7%).
In our case-study we had 18 nails with NAPSI=8 (maximum score) and 9 of these nails did not have vascularization (50%) probably due to avascular necrosis and 13 had alteration of the matrix (72,2%).
Nails with NAPSI =0,
(Fig.3) 21 had decreased thickness of the ventral plate (20%),
7 had increased thickness of nail bed (6,6%),
3 had alteration of the matrix (2,8%),
41 had increased vascularization signal (39%).
Our study shows that the increase of thickness of the nail bed and the decrease of the thickness and deformation of the ventral plate were significantly higher (p<0,01; p<0,01) in nails with NAPSI >0,
compared to nails with NAPSI= 0 in patients with onychopathy.
We observed that the decreased thickness and deformation of the ventral plate and higher vascularization signal were significantly higher in nails with NAPSI=0 of psoriatic patients comparing with healthy control nails (p<0,05 p <0,01).