Diabetes Care, Vol 16, Issue 8 1187-1189, Copyright © 1993 by American Diabetes Association
Painful neuropathy and foot ulceration in diabetic patients
A Veves, C Manes, HJ Murray, MJ Young and AJ Boulton
University Department of Medicine, Manchester Royal Infirmary, United Kingdom.
OBJECTIVE--To examine the prevalence of painful symptoms in neuropathic
patients with or without foot ulceration. It has been suggested that there
are two clinical presentations of sensory diabetic neuropathy with little
overlap: painful (acute or chronic) and painless with recurrent foot
ulceration. RESEARCH DESIGN AND METHODS--We examined three groups of
diabetic patients matched for age and duration of diabetes--24 without
neuropathy on clinical grounds (mean age 56.1 yr [range 38-76 yr], diabetes
duration 12.6 yr [0.4-40 yr]), 30 with neuropathy (mean age 55.3 yr [range
21-73 yr], diabetes duration 17.3 yr [range 0.2-61 yr]), and 40 with
neuropathic foot ulceration (mean age 58.1 yr [range 41-72 yr], diabetes
duration 18.5 yr [range 1-46 yr])--and compared them with 20 healthy
subjects (mean age 50 yr [range 37-69 yr]). For evaluation of neuropathy,
the neuropathy symptom score, neuropathy disability score, and vibration
perception threshold were measured. RESULTS--No difference existed between
the neuropathic and foot ulcer groups in the neuropathy symptom score (4.2
+/- 3.9 [mean +/- SD] vs. 2.5 +/- 2.1, NS) and neuropathy disability score
(15.1 +/- 5.7 vs. 16.8 +/- 6.1, NS), but the vibration perception threshold
was lower in the neuropathic group (30.1 +/- 13.4 vs. 40.5 +/- 13.8 V, P
< 0.001). Painful symptoms (neuropathy symptom score > 3), either in
the past or during the time the study was conducted, had been experienced
by none of the control subjects, 7 (29%) of the nonneuropathic group, 18
(60%) of the neuropathic group, and 17 (43%) of the foot ulcer group (NS
for the last two groups), and were present at the time of examination in 13
(43%) of the neuropathic group and in 13 (33%) of the foot ulcer group (NS
in all groups). Duration of symptoms was < 12 mo in 12 (40%) neuropathic
and 15 (38%) foot ulcer patients (NS). CONCLUSIONS--We conclude that
painful symptoms are frequent in diabetic neuropathy, irrespective of the
presence or absence of foot ulceration and that these symptoms can occur at
any stage of the disease. These results suggest that there is a spectrum of
neuropathic syndromes from the painful to the patients with foot
ulceration, and that much overlap exists.