Some may present with autonomic involvement, and in these cases, main symptoms comprise bladder and bowel dysfunction, orthostatic dizziness or cardiac abnormalities.
[symptoma.com]
Bladder dysfunction in peripheral neuropathies Muscle Nerve 2012 ; 45 : 2-8 [16] Nevo Y., Pestronk A., Kornberg A.J., Connolly A.M., Yee W.C., Iqbal I., and al.
[em-consulte.com]
Autonomic system dysfunction can occur; in such a case, the patient would complain of orthostatic dizziness, problems breathing, eye, bowel, bladder and cardiac problems.
[en.wikipedia.org]