Memory Loss vs Normal Forgetting — When Should You Worry?

We all forget where we put our keys, or cannot remember a name on the tip of our tongue. This is completely normal. But when does forgetfulness cross the line from normal ageing into something that needs medical attention? This is a question Dr. Anand Karnam is asked every week.

Normal Forgetting vs Concerning Memory Loss

Here is a simple table to help you distinguish:

Normal (Not Usually Worrying)

• Forgetting where you put your keys, then remembering later
• Momentarily forgetting a name, then remembering it shortly after
• Taking a moment longer to recall information than you used to
• Forgetting an appointment you did not write down
• Having trouble multitasking as effectively as you did at 30

Concerning (See a Doctor)

• Getting lost in a neighbourhood you know well
• Forgetting a conversation that happened hours ago — repeatedly
• Asking the same question multiple times in the same conversation
• Difficulty with previously familiar tasks — cooking a known recipe, managing finances
• Significant personality or mood changes — unusual aggression, withdrawal, apathy
• Leaving the stove on, forgetting to eat, or getting confused about the date regularly
• Family members noticing the memory problem before the person themselves

"When a person says 'I think I'm getting forgetful' — they usually aren't. When family members say 'we are worried about their memory' — that is when to take it seriously."

What Causes Concerning Memory Loss?

Not all memory loss is dementia — and even when it is dementia, there are different types with different prognoses. Common causes include:

• Depression: Depression in the elderly commonly presents with memory complaints — and is fully treatable
• Thyroid underactivity (hypothyroidism): Slows thinking and memory — completely reversible with thyroid hormone replacement
• Vitamin B12 deficiency: Extremely common in India. Causes memory problems, confusion, and mood changes — reversible with B12 injections or tablets
• Medication side effects: Several common medicines cause cognitive impairment — benzodiazepines, antihistamines, some blood pressure medicines
• Alzheimer's disease: Progressive, cannot be reversed — but treatment slows progression and manages symptoms
• Vascular dementia: Caused by small strokes — controlling blood pressure and diabetes slows its progression significantly

What Tests Are Done for Memory Problems?

A neurologist will first perform a cognitive assessment — a structured series of questions and tasks that takes about 10–15 minutes and gives a reliable picture of memory, attention, language, and reasoning. Blood tests check for thyroid function, B12, blood sugar, and kidney function. MRI brain identifies structural causes — vascular disease, atrophy patterns, or treatable conditions like normal pressure hydrocephalus.

When Should I See a Doctor?

If you or a family member has noticed any of the 'concerning' features listed above — especially if they are progressive over months, or if family members are more worried than the person themselves — it is time to see a neurologist. Earlier assessment means earlier identification of treatable causes and earlier access to management that slows progression when dementia is diagnosed.

At Sri Anand Child and Neuro Center, Chanda Nagar, Dr. Anand Karnam provides comprehensive memory and cognitive assessments. Call +91 90633 66983.