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Vol. 1. Núm. 4.
Páginas 233-235 (octubre - diciembre 2021)
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Vol. 1. Núm. 4.
Páginas 233-235 (octubre - diciembre 2021)
Scientific letter
Open Access
Brachial plexopathy due to varicella-zoster virus as the initial presentation of HIV infection: Importance of rehabilitation and pain management
Plexopatía braquial por virus Varicela Zóster como presentación inicial de infección por VIH: Importancia de la rehabilitación y manejo del dolor
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L.A. Ramírez Abadíaa,c, L. Arce Galveza,c,
Autor para correspondencia
leonardo.arce@correounivalle.edu.co

Corresponding author at: Hospital Universitario del Valle, Calle 5 No 36-08, 112 building, 1 floor, Cali, Colombia.
, S. Ayala Zapatab,c
a Department of Physical Medicine and Rehabilitation, Universidad del Valle, Cali, Colombia
b Department of Internal Medicine, Universidad del Valle, Cali, Colombia
c Hospital Universitario del Valle, Evaristo García E.S.E., Cali, Colombia
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Tablas (2)
Table 1. Patient studies.
Table 2. Electromyography and nerve conduction studies.
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Brachial plexopathy (BP) is a heterogeneous neurological entity that can generate different degrees of disability.1 Non-traumatic etiologies are rare, with infectious causes representing less than 2% of cases.2 In this case, we present a patient with BP due to varicella-zoster virus (VZV) as the initial manifestation of a human immunodeficiency virus (HIV) infection.

A 54-year-old male patient from Cali, Colombia, who consulted for the appearance of vesicular lesions and pruritic scabs; 10 days later, he present a sudden paresis of the LUL, with burning pain in the anterior and lateral face of the arm, without episodes of pain in LUL before the motor deficit, no fever, gastrointestinal or respiratory symptoms. His only personal history was long-standing hearing loss without studies on the matter.

Underweight, a preserved cognitive response and functional cranial nerves, with negative meningeal signs, were found, also LUL paresis that limited abduction, flexion, and rotations of the shoulder with a manual muscle test (MMT) of 0/5, in flexion and extension of the elbow 2/5, flexion and extension of wrist and hand 1/5, decreased muscle tone, and hyporeflexia. The other limbs with a 5/5 MMT. The sensory evaluation found allodynia in different areas of the LUL, without having a ro"ot or peripheral nerve distribution with a severe pain intensity of 7/10 on the numerical classification scale (NCS).

Multiple diagnostic studies were performed, finding a positive rapid test for HIV and a viral load of 1.442.216 copies/ml and total CD4 of 124, considering a patient in the AIDS phase. A lumbar puncture was performed with a cytochemical of cerebrospinal fluid with hyper protein spinal cord and mixed pleocytosis, a normal opening pressure, and a positive filmArray for VVZ (Table 1). In the imaging studies, a normal magnetic resonance imaging (MRI) of the brain and cervical spine and an MRI with angiography without alterations, ruling out vascular or brain parenchymal involvement. Electromyography studies plus LUL neuron conduction reported a severe incomplete axonal lesion of the left brachial plexus, at the level of the upper, middle, and lower trunks without signs of re-innervation, the patient was diagnosed with a VVZ brachial plexopathy (Table 2).

Table 1.

Patient studies.

Blood test
Test  Results  Test  Results 
Blood countWBC 3300/mm3, Hb: 10.5 g/dl Plt: 164000/mm3, Lymphocytes: 850/mm3Phosphorus  3, 8 mg/dl 
Potassium  3, 7 mg/dl 
Sodium  140 mg/dl 
C-reactive protein  24  Calcium  8.7 mg/dl 
Non-treponemal test  Negative  Treponemal test  Negative 
Hepatitis B Surface antigen  Negative  Glucose  86 
VIH ELISA//VIH viral load  Positive // 1. 442. 216 cop/ml log: 6. 16  CD4  124 
HCV antibody test  0.07 (Reactive)  Toxoplasma IgG  0.99 
HBC anti-core  Non-reactive  C3  90 (88–165) 
B12 Vitamin  370 mg/dl  C4  57 (14–44) 
Creatinine///BUN  0.9 mg/dl /// 25 mg/dl  ENAS  0.5 (<1) 
Cerebro spinal fluid
Color: Clear. Opening pressure: 8 cm/H2O.
- CSF glucose: 57 mg/Dl - LDH: 89 U/L - RBC:31 /mm3 - Lymphocyte: 19/mm3- Protein/CSF: 570 mg/Dl - WBC: 7/mm3
Baciloscopy: Negative - Treponemal: Negative - FilmArray: Varicella zoster.Chinese ink: Negative - Gram: Negative - Fungal culture: Negative

WBC: White blood cells, RBC: Red blood cells, Hb: Hemoglobim, Plt: Platelet, VIH: Human immunodeficiency virus, HB: Hepatitis, BUN: Blood urea nitrogen, CSF: cerebrospinal fluid.

Table 2.

Electromyography and nerve conduction studies.

Neuroconduction left upper limb
Sensory nerve conductionSitePeak  Amp  Site 1Site 2Dist (cm)Vel (m/s)
(ms)  (μV) 
Median-left (2 nt digit)  Wrist  3.8 (N < 3,6)  9.6 (N > 10)  Wrist  2 nt digit  14  37 (N > 40) 
Ulnar-left (Lat Mall)  Calf  3.7 (N < 4,2)  10.3 (N > 5)  Calf  Lateral Mall  14  38 (N > 38) 
Motor nerve conductionSitePeak  Amp  Site 1Site 2Dist (cm)Vel (m/s)
(ms)  (mV) 
Median-left (Abd poll brev)Wrist  4.2 (N < 4)  1.5 (N > 5)  ElbowWrist2254 (N > 50)
Elbow  8.3  1.6 
Ulnar-left (abd 5th digit)Wrist  3.8 (N < 3.8)  4.7 (N > 3)  ElbowWrist2074 (N > 50)
Elbow  6.5  4.3 
Axilar-left (Deltoides)  Clavicle  NR (N < 5)  NR (N > 5)     
Musculocut-left (Biceps)  Clavicle  4.5 (N < 5.7)  0.7 (N > 5.0)     
Radial-left (Ext Ind Prop)  8 cm  0.9 (N < 2.5)  2.8 (N > 1.7)     
Supraesc (Ssupraespinatus)  Clavicle  NR (N < 3.7)  NR (N > 5)     
Electromyography left upper limb
Muscle - Nerve  Root  Ins Act  Fibs  Psw  Amp/Dur  Poly  Recrt/Int Pat 
Abd poll Brev - Median  C8-T1  Nml  Nml  Nml  Nml  Reduced/25% 
Pronator teres - Median  C6-C7  Nml  Nml  Nml  Nml  Reduced/25% 
Rhomboid Major - DorsalScap  C5  Nml  Nml  Nml  Nml  Nml 
1stDor Int - Ulnar  C8-T1  Nml  Nml  Nml  Nml  Reduced/25% 
Brachiorad - Radial  C5-C6  Incr  Nml  Nml  None/0% 
Triceps - Radial  C6-C7-C8  Nml  Nml  Nml  Nml  None/0% 
Infraspinatus - SupraScap  C5-C6  Incr  Nml  Nml  None/0% 
Deltoid - Axillary  C5-C6  Incr  Nml  Nml  None/0% 
Flex carp uln - Ulnar  C8-T1  Nml  Nml  Nml  Nml  Reduced/25% 
Biceps - Musculocut  C5-C6  Incr  Nml  Nml  None/0% 

Amp: Amplitude, Dist: Distance, Vel: Velocity, Ins act: Insertion activity, Fibs: fibrillation, Psw: Positive sharp waves, Dur: Duration, Poly: polyphasic, Recrt: Recruitment, Int Pat: Interference pattern, NML: Normal. NR: no response.

The patient required treatment with intravenous acyclovir for 14 days, in addition to pregabalin titrated up to 225 mg/day for neuropathic pain with adequate control, ENC 2/10. A rehabilitation plan was also established with functional objectives with physical and occupational therapy, in addition to orthotic management that achieved an adequate positioning and prevention of LUL contractures.

This case illustrates the neurological complications of varicella-zoster infection, in addition to generating the need to rule out the most frequent causes of immunosuppression in patients with this symptomatology.1 In the diagnostic approach, the patient's history and his semiological evaluation generate a diagnostic approach that must be confirmed with images and electrophysiological studies to rule out related etiologies. The findings of the involvement of the brachial plexus with emphasis on the middle and upper trunk confirmed the diagnosis and focused the multidisciplinary team on the comprehensive management of the patient, a Parsonage-Turner syndrome was ruled out by not complying with the typical presentation of onset and chronological evolution of pain and weakness.3

Herpes zoster is characterized by the reactivation of the varicella-zoster virus that has remained latent in the dorsal root ganglion, being associated with different neurological complications, most of them sensitive, with the motor involvement described in only 2–3% of patients, the cases.4 The motor deficit and pain could be related to an extension of the viral infection from the dorsal root ganglion to the anterior motor root before viral reactivation,4 however, it may be due to an intense inflammatory process and damage to the motor root due to an immune-mediated post-infectious phenomenon such as the one presented in this case,5 generally appears between the first and fourth week with a time range between 1 and 120 days.4

The treatment of this entity and its neurological and functional complications is based on antiretroviral management, in addition to transversal interventions in the disease process, with rehabilitation and pain management.2 The rehabilitation plan should include the maintenance of joint mobility arches, muscle strengthening, and sensory and motor re-education with an emphasis on activities of daily living. Pain interventions are various, starting from topical medication, gabapentinoids, atypical opioids to interventionism such as neurostimulation or surgical interventions; in this case, achieving symptom control with a gabapentinoid selected based on the safety of the patient's history and comorbidities.2

It is considered in these patients that an early diagnosis adjusted to a multidisciplinary intervention will generate a positive outcome in their quality of life, pain control, and return to daily activities, in addition to strict surveillance and management of their comorbidities.

Ethical consideration

The patient gave his consent for the use of clinical and paraclinical information, it was authorized by the ethics committee of the Hospital Universitario del Valle, Cali, Colombia.

Funding

The authors did not receive funding to carry out this report.

Declaratipon of Competing Interest

We declare that we have no conflict of interest.

Acknowledgments

To the Hospital Universitario del Valle Evaristo García E.S.E and its department of electro-diagnosis.

References
[1]
R. Verma, S. Sarkar, C. Shettigar.
Zoster brachial plexopathy as a presenting manifestation of human immunodeficiency virus infection.
Ann Indian Acad Neurol., 23 (2020), pp. 804-807
[2]
B.D. Tharin, J.A. Kini, G.E. York, J.L. Ritter.
Brachial plexopathy: a review of traumatic and nontraumatic causes.
AJR Am J Roentgenol., 202 (2014), pp. W67-W75
[3]
L. Arce, J.F. Cantor, L.M. Rodríguez.
Parsonage-Turner posterior a vacunación antirrábica por mordedura de murciélago: comunicación de un caso.
Rev La Soc Española Del Dolor., 28 (2021), pp. 57-61
[4]
M. Melikoglu, M.A. Melikoglu.
An unusual cause of shoulder pain; herpes zoster induced brachial plexopathy, a case report and review of the literature.
J Back Musculoskelet Rehabil., 26 (2013), pp. 243-245
[5]
C. Araz, S. Askin, C. Yilmaz.
Herpes zoster brachial plexopathy: direct steroid injection.
Turk Neurosurg., 27 (2017), pp. 662-664
Copyright © 2021. Sociedad Española de Neurología
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