Neurological sense

Neurological Conditions in Senior Citizens: Understand the Terms, Assess Better, Care Better

By KK Seth | Updated 22 September 2026 | Sources: WHO Global Status Report on Neurology 2025

When a doctor writes hemiplegia, aphasia or neuropathy on a discharge summary, families often nod without knowing what it means for daily life at home. This guide explains 26 common neurological terms in plain language, what each one does to everyday living after 60, and one practical care tip for each.

How the nervous system is wired

CNS (central nervous system) is the brain and spinal cord, the control centre.

PNS (peripheral nervous system) is every nerve outside it, reaching hands, feet, face and organs.

Motor nerves carry commands out to muscles. Sensory nerves carry touch, pain and position back to the brain. Almost every condition below is a break somewhere along this wiring.

Red edge: stroke and paralysisIndigo-blue edge: memory and thinkingDeep blue edge: movement disordersSky edge: nerves, face and pain

What the World Health Organization reports

Source: WHO Global Status Report on Neurology, released 14 October 2025 in Geneva and Seoul. It is the first global baseline under the Intersectoral Global Action Plan on Epilepsy and Other Neurological Disorders 2022 to 2031.

3 billion+people, over 40 percent of the world, live with a neurological condition

11 milliondeaths every year from neurological disorders

Fewer than 1 in 3countries have a national policy for neurological care

80 timesfewer neurologists in low-income countries than in rich nations

Top 10 causes of neurological death and disability (2021):

1. Stroke
2. Neonatal encephalopathy
3. Migraine
4. Alzheimer's and other dementias
5. Diabetic neuropathy
6. Meningitis
7. Epilepsy
8. Preterm birth complications
9. Autism spectrum disorders
10. Nervous system cancers

Why this matters for Indian seniors: Three of the top five, stroke, dementia and diabetic neuropathy, rise sharply with age and are closely linked to blood pressure and diabetes. WHO notes that many neurological conditions can be prevented or treated, yet care stays out of reach in rural and underserved areas. Knowing the terms below is the first step to getting that care in time.

Read the WHO news release: 11 million lives lost each year: urgent action needed on neurological care

First, the emergency rule: BE-FAST, then call 108 or 112

Clot-busting treatment for stroke works best within about 4.5 hours of the first symptom. Note the exact time symptoms began and go to a hospital with a CT scanner.

BBalance lost suddenly

EEyes: sudden blurred or lost vision

FFace drooping on one side

AArm weak or numb

SSpeech slurred or confused

TTime to call 108 now

Stroke and paralysis terms

The words most often seen on discharge papers after a stroke or spine injury. The red area in each figure shows the part affected.

Stroke (CVA)

Brain attack

What it is: Blood supply to part of the brain suddenly stops, either from a clot (ischemic, about 85 percent) or a burst vessel (hemorrhagic).

Effect on life: Can leave one-sided weakness, speech loss, swallowing trouble, memory change and depression. Recovery is fastest in the first 3 to 6 months.

Care tip: Physiotherapy should start within days, not weeks. Control BP, sugar and cholesterol to prevent a second stroke.

Onset: suddenCommon after 60

TIA

Mini-stroke, warning stroke

What it is: Stroke symptoms that disappear within minutes to hours because the blockage clears on its own.

Effect on life: No lasting damage, but a major warning. The risk of a full stroke is highest in the next few days.

Care tip: Never ignore a symptom that "went away". See a doctor the same day.

Onset: sudden, briefCommon after 60

Hemiplegia

One side of body paralysed

What it is: Paralysis of the arm and leg on one side, usually after a stroke on the opposite side of the brain. Hemiparesis means weakness rather than full paralysis.

Effect on life: Difficulty walking, dressing, bathing and eating with one hand. High risk of falls and shoulder pain.

Care tip: Approach and talk from the weak side to encourage the brain to use it. Support the weak arm on a pillow.

Onset: suddenCommon after 60

Monoplegia

One limb paralysed

What it is: Paralysis of a single arm or leg, from a small stroke or an injured nerve, for example radial nerve palsy (wrist drop).

Effect on life: Loss of grip, writing or walking depending on the limb, but independence is often preserved.

Care tip: Splints and hand therapy prevent stiffness while the nerve recovers.

Onset: suddenCommon after 60

Paraplegia

Both legs paralysed

What it is: Paralysis of both legs and often the lower body, from spinal cord injury, tumour, infection (such as spinal TB) or severe spine degeneration.

Effect on life: Wheelchair dependence, bladder and bowel control problems, pressure sores.

Care tip: Change position every 2 hours and check the skin daily over hips, heels and tailbone.

Onset: sudden or gradualCommon after 60

Quadriplegia

All four limbs paralysed (tetraplegia)

What it is: Paralysis of arms and legs from injury high in the neck (C1 to C8). In seniors, even a minor fall on a stiff, arthritic neck can cause it.

Effect on life: Full dependence for daily care; breathing may be affected in very high injuries.

Care tip: After any fall with neck pain or tingling in the hands, do not lift the person. Keep the neck still and call 108.

Onset: suddenCommon after 60

Aphasia

Loss of language

What it is: Damage to the language areas of the brain, affecting speaking, understanding, reading or writing. Intelligence usually remains intact.

Effect on life: Deep frustration, isolation and being treated as "confused" when the person actually understands.

Care tip: Use short sentences, yes/no questions, pictures and patience. Speech therapy helps even months later.

Onset: suddenCommon after 60

Dysphagia

Swallowing difficulty

What it is: Weak or uncoordinated swallowing, common after stroke and in Parkinson's and dementia.

Effect on life: Coughing while eating, weight loss, and aspiration pneumonia, a leading cause of death after stroke.

Care tip: Sit fully upright to eat, give small bites, and thicken liquids if advised. Stay upright 30 minutes after meals.

Onset: sudden or gradualCommon after 60

Memory and thinking conditions

Changes in memory, judgement and behaviour. Early assessment opens more treatment and planning options.

Mild cognitive impairment

MCI, more than normal forgetfulness

What it is: