Skin Temperature in Parkinson’s Disease Measured by Infrared Thermography
Table 2
Examinations, baseline
PD patients (n = 21)
Healthy controls (n = 19)
value
Arterial hypertension, yes/no
11/10
9/10
>0.999
Orthostatic hypotension1, yes/no
3/18
5/14
0.442
Tympanic temperature, °C: mean ± SD
36.7 ± 0.3
36.6 ± 0.2
0.195
Subjective hyposmia, yes/no
19/2
2/17
<0.0001
Olfactory function, Sniffin’ sticks; median (IQR)
7 (5.5–10)
12 (11–14)
<0.0001
Baseline temperature, 3rd finger distal phalanx, °C: mean ± SD
27.8 ± 3.7
29.2 ± 3.1
0.1814
Baseline temperature, 5th finger distal phalanx, °C: mean ± SD
27.4 ± 3.7
28.9 ± 3.2
0.1749
Thermal symmetry2, 1st finger distal phalanx, °C: median (IQR)
0.22 (0.12–0.63)
0.52 (0.32–1.0)
0.029
Thermal symmetry2, lower dorsal foot, °C: median (IQR)
1.13 (0.49–1.98)
0.46 (0.33–0.69)
0.002
Thermal symmetry2, 2nd toe, °C: median (IQR)
0.55 (0.32–1.89)
0.14 (0.03–0.63)
0.012
1Orthostatic hypotension: decline of ≥20/10 in mmHg in systolic/diastolic blood pressure. 2Thermal symmetry = temperature difference between contralateral ROIs, calculated from all ROIs on trunk/extremities. Only ROIs with significant baseline symmetry differences are listed.
