Symptoms of idiopathic polyneuropathy include pain and numbness in the feet and hands, paresthesias and muscle weakness, according to Johns Hopkins Medicine. As the disease worsens, the patient may experience balance problems and difficulty walking.
Idiopathic polyneuropathy affects various sensory and motor nerves, according to Johns Hopkins Medicine. The patient may feel numbness and tingling in the feet and hands. This numbness may go unnoticed if it does not cause pain, notes WebMD. When idiopathic polyneuropathy affects the sensory nerves, the patient may be unable to feel touch, temperature and pain, states Healthline. He may lack coordination and lose his reflexes.
Another symptom of idiopathic polyneuropathy is strange and vague sensations, also known as paresthesias, reports Johns Hopkins Medicine. The patient may be unable to stand properly or walk on uneven spaces or in the dark. Idiopathic polyneuropathy causes muscle weakness that makes it difficult for the patient to retain his balance. The patient may feel faint when standing, reports the Foundation for Peripheral Neuropathy. Patients may also have cramps and weak ankles.
In rare cases, idiopathic polyneuropathy affects the autonomic nervous system, reports Johns Hopkins Medicine. The patient may experience symptoms such as diarrhea, constipation, vomiting, incontinence and nausea. He may also suffer from sexual dysfunction, sweating abnormalities and abnormal blood pressure or heart rate, according to Healthline.