Ataxia

Ataxia means loss of coordination — problems with balance, walking, speech, or fine hand movements. It's a symptom, not a single disease. The underlying cause can be temporary (alcohol, certain medicines, infection) or long-term (stroke, multiple sclerosis, inherited conditions, brain tumours).

Symptoms

• Unsteady walking, wide-based gait, stumbling
• Poor balance
• Difficulty with fine tasks — writing, buttoning, using utensils
• Slurred, slow, or unclear speech (dysarthria)
• Problems with eye movement
• Tremor when reaching for something

Causes

• Stroke, particularly affecting the cerebellum
• Multiple sclerosis and other autoimmune conditions
• Head injury
• Tumours affecting the brain
• Long-term alcohol use
• Vitamin B12 or vitamin E deficiency
• Certain medicines — some anti-seizure drugs, lithium, chemotherapy
• Infections — viral or bacterial affecting the brain
• Inherited ataxias — a group of genetic conditions, often starting in childhood or young adulthood (Friedreich ataxia, spinocerebellar ataxias)
• Cerebral palsy

Diagnosis

• Neurological examination
• MRI of the brain
• Blood tests — vitamin levels, thyroid, autoimmune markers, toxins
• Genetic testing — for inherited ataxias
• Nerve conduction studies in some cases

Treatment

Treatment depends on the cause. Some forms are reversible — correcting vitamin deficiencies, stopping a causative medicine, treating an infection. Inherited ataxias usually have no cure, but supportive care — physiotherapy, occupational therapy, speech therapy, mobility aids — makes a real difference. Any new balance or coordination problem deserves prompt medical evaluation; sudden onset may indicate a stroke (dial 112).