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Neuropathy, a condition characterized by nerve damage, can stem from various underlying causes. These causes range from metabolic disorders and infections to exposure to toxins and genetic predispositions.
The main causes of neuropathy include:
Diabetes: It is one of the most common causes of peripheral neuropathy. High blood sugar levels lead to blockages in the blood vessels supplying the nerves and the accumulation of metabolic by-products, causing oxygen deficiency and impaired blood flow to the nerves. This condition results in damage to nerve structures, including the main body of the nerve fibers, their endings, and myelin sheaths. Approximately 14 out of every 100 people in Turkey are diabetic, and at least half of diabetic patients have a risk of developing neuropathy.
Vitamin Deficiencies: Deficiencies in B12, folic acid, and other B-group vitamins can lead to peripheral neuropathy, especially in sensory nerves, and spinal cord damage. Long-term B12 deficiency is also associated with cognitive dysfunction and dementia.
Chemotherapy Drugs: Some chemotherapy drugs used in cancer treatment can cause nerve damage, leading to neuropathy.
Exposure to Toxins: Exposure to various toxins, including pesticides, solvents (such as paint thinners, solvents), and heavy metals like mercury and lead, can cause peripheral neuropathy.
Cancer: Substances secreted by cancer cells can damage nerves, and sometimes neuropathy symptoms can appear even before a cancer diagnosis (paraneoplastic syndromes).
Excessive Alcohol Consumption: Chronic and excessive alcohol consumption can lead to small fiber neuropathies, particularly affecting sensory nerves in the lower extremities.
Chronic Kidney Failure: Chronic kidney failure can contribute to neuropathy through elevated urea levels in the blood and electrolyte imbalances (such as sodium, potassium, calcium, magnesium).
Liver Failure: Cirrhosis, a result of liver failure, can increase the risk of developing neuropathy.
Infections: Various infections, such as shingles (herpes zoster), HIV, Lyme disease, cytomegalovirus (CMV), and Epstein-Barr virus (EBV), can affect the nervous system and lead to neuropathy.
Connective Tissue Diseases: Rheumatic or connective tissue diseases like rheumatoid arthritis, Sjögren's syndrome, Polyarteritis Nodosa (PAN), and Systemic Lupus Erythematosus (SLE) can cause neuropathy through autoimmune mechanisms.
Hereditary Neuropathies: Hereditary neuropathies, which develop due to genetic factors, usually begin in childhood and progress over time. Charcot-Marie-Tooth disease is one of the most common examples of this group.
What Causes Neuropathy?
The main causes of neuropathy include:
Diabetes: It is one of the most common causes of peripheral neuropathy. High blood sugar levels lead to blockages in the blood vessels supplying the nerves and the accumulation of metabolic by-products, causing oxygen deficiency and impaired blood flow to the nerves. This condition results in damage to nerve structures, including the main body of the nerve fibers, their endings, and myelin sheaths. Approximately 14 out of every 100 people in Turkey are diabetic, and at least half of diabetic patients have a risk of developing neuropathy.
Vitamin Deficiencies: Deficiencies in B12, folic acid, and other B-group vitamins can lead to peripheral neuropathy, especially in sensory nerves, and spinal cord damage. Long-term B12 deficiency is also associated with cognitive dysfunction and dementia.
Chemotherapy Drugs: Some chemotherapy drugs used in cancer treatment can cause nerve damage, leading to neuropathy.
Exposure to Toxins: Exposure to various toxins, including pesticides, solvents (such as paint thinners, solvents), and heavy metals like mercury and lead, can cause peripheral neuropathy.
Cancer: Substances secreted by cancer cells can damage nerves, and sometimes neuropathy symptoms can appear even before a cancer diagnosis (paraneoplastic syndromes).
Excessive Alcohol Consumption: Chronic and excessive alcohol consumption can lead to small fiber neuropathies, particularly affecting sensory nerves in the lower extremities.
Chronic Kidney Failure: Chronic kidney failure can contribute to neuropathy through elevated urea levels in the blood and electrolyte imbalances (such as sodium, potassium, calcium, magnesium).
Liver Failure: Cirrhosis, a result of liver failure, can increase the risk of developing neuropathy.
Infections: Various infections, such as shingles (herpes zoster), HIV, Lyme disease, cytomegalovirus (CMV), and Epstein-Barr virus (EBV), can affect the nervous system and lead to neuropathy.
Connective Tissue Diseases: Rheumatic or connective tissue diseases like rheumatoid arthritis, Sjögren's syndrome, Polyarteritis Nodosa (PAN), and Systemic Lupus Erythematosus (SLE) can cause neuropathy through autoimmune mechanisms.
Hereditary Neuropathies: Hereditary neuropathies, which develop due to genetic factors, usually begin in childhood and progress over time. Charcot-Marie-Tooth disease is one of the most common examples of this group.