Forgetfulness and Memory Loss at Work

Memory loss results from disruption at any of these processes

Forgetfulness and Memory Loss 

Forgetfulness or failure to remember information, is a common complaint. All of us have at some time or the other forgotten to make that important call, to pick up some items from the store, an anniversary or birthday, or a colleague’s name. Students forget what they have “learnt” during exams. We often can’t remember where we have left our car keys, our wallet or that important document. Is it normal? And more importantly; when do we need to seek help?

Forgetfulness or memory loss and difficulty concentrating are common symptoms of mental health disorders. This is specially so in depression, anxiety disorders, ADHD (Attention Deficit Hyperactivity Disorder), and dementias as shown in the examples below.

A young working professional seeks help for increased forgetfulness and poor ability to focus at work. Further probing reveals decreased interest in doing things at work and home. She is also irritable, depressed and her sleep is disturbed. These symptoms of low mood can exist in the background of memory loss and problems with focus.

A student during exams has high anxiety causing memory loss. She cannot recall the answer to a certain question. She gets nervous. This causes her to make mistakes in the next question. She tends to panic; fail to recall what she studied. This vicious cycle is common in anxiety disorders and can manifest as problems with concentration, memory and forgetfulness.

An older person does not just forget the name of his neighbour (something that may happen to any of us); but also who she is. He has problems using money, and with shopping. Difficulties at work manifest towards the end of the career. Dementias affect the aged; cause memory loss and affect the context of the memory. 

A young professional has problems organising and completing projects at work. There may be a history of attention and academic problems in school. Working memory gaps are common in this group. ADHD is a common cause of this problem in adults.

Memory Processing in the Brain

To understand further, it helps to know in brief how memory works. It is a 3 stage process

Encoding

The stage when sounds, images and other sensations are given meaning is called encoding. Sensations are coded electrically for access by other brain areas. (We hear a catchy song from a new movie).

Storage

The process of association or tagging the input with other bits of data to make it persist. The song thus gets stored in our long term memory. Initially, the song remains for a very short while. At this point it is in our working or short term memory. It is encoded. However, we forget the song as the next scene unfolds on screen. The song is repeated at the end of the movie; someone hums the song as we leave the hall. The visuals of the song, and the feelings evoked, the fact that it was a famous actor, then reinforce the memory and makes it persist.

Retrieval

When we need to use this stored data, the brain fishes it out from its long term memory. The more the associations or tags we formed earlier, the more easily the brain can access the information.

Problems in memory can therefore occur at any of these stages. Many of these occur at the stage of encoding because we are simply not paying attention; and many other distractions are vying for our focus at the same time. (e.g checking our FB messages while studying). The brain does not multi-task, it can only do one thing at a time.

Repetition, rehearsal and organisation help in fixing and storage of long term memory. The more widespread and elaborate the connections, and the more data available about an input, the more the connections formed by the brain, and the easier it is for the brain to retrieve the information when required. Many cases of forgetting are due to retrieval failures. The information is there in long term memory but we are unable to access it. This is why we can recall certain things at a later date.

Depression affects memory in many ways. Being unable to concentrate is a symptom of depression. Repeated depressive thoughts also block the learning process through distraction. This affects the stage of encoding. Disturbed sleep which is a common symptom in depression hampers fixing into long term memory.
Forgetfulness is common in ADHD of adults. ADHD lowers the power to focus. The person is easily distracted. The attention span is reduced. This impairs short term or working memory. ADHD persists in up to 40% of aduts.
Anxiety gives rise to pointless thoughts (“my father will be so angry if I don't crack this exam”) which frustrates attempts to retrieve the matter learned. The anxiety provoking thoughts distract from the text which is being studied and impedes the  encoding process.
In dementia there is destruction and loss of brain cells. Dementia blocks all stages of the memory and learning process. The process is not reversible.

Forgetfulness and Memory Loss – when to seek help?

• When it affects our work, or the quality of our work
• When the failure to learn and recall affects our daily activities and functioning
• When there are also problems including sleep, appetite, inter-personal or behaviour changes.
• When it is strange - leaving keys in the fridge 
• When it can harm - often leaving cooking burner on, leaving doors unlocked at night

In normal forgetfulness, the person may recall the memory when some cues are given. The memories were encoded, they just needed some reminder to access them. In clinical disorders resulting in memory loss the memories were never laid down in the first place, or the storage structures in the brain are destroyed. Access to these memories may not be possible. 

References

1. Brydges CR, Ozolnieks KL, Roberts G. Working memory - not processing speed - mediates fluid intelligence deficits associated with attention deficit/hyperactivity disorder symptoms. J Neuropsychol. 2015 Dec 31. doi: 10.1111/jnp.12096. [Epub ahead of print]

OCD – Obsessive Compulsive Disorder

What is OCD?

OCD – Obsessive compulsive disorder – is a severe type of anxiety disorder involving obsessions and compulsions that affects the day-to-day functioning of a person.

What are obsessions?

Obsessions are thoughts, images, or impulses that occur over and over again; cause severe anxiety; feel outside the person’s control and affect the day to day functioning of a person.

What obsessions are not

Most of us know what it is like to be preoccupied with a thought, idea or even a person sometimes. These are not obsessions. They often give pleasure, usually pass off soon and do not affect our daily routine or work. Certain types of personality are also linked to a fastidious concern for details and “correctness”. However, this is not associated with anxiety and hence not an obsession.

What are compulsions?

Compulsions are repetitive behaviours aimed at decreasing the anxiety associated with the obsessions.

What compulsions are not

Not all repetitive behaviours are compulsions. Bedtime rituals, religious practices, learning new skills involve repeating an activity. Behaviours also depend on the condition and situations of a person’s life. Arranging wares back on shelves are a normal part of a shop assistant’s work and are not compulsions.

Types of obsessions and compulsions in OCD

Contamination

Contamination is among the commonest of obsessions. There is a fear of dirt, germs, waste, toxins or body secretions. A person is afraid of getting an illness or spreading it. Sometimes he/she may just have feeling of “not being clean”. Touching an “unclean” object or even being near it may cause extreme anxiety. This is only eased by repeated washing and cleaning. Often the washing has to be done in a particular way or be repeated many times before he/ she feels clean again. The person also goes through great trouble to avoid or prevent contact with the contaminants. In time, they may become house-bound and force family members to also follow these cleaning rituals.

Pathological doubt

A person worries all the time that he will cause some harm to himself, his family or others due to his own carelessness. ‘Did I lock the door?’; ‘Did I switch off the lights?’; ‘Is the gas turned off?’ This constant questioning, doubt and responsibility leads to a compulsion to check and recheck. He may need to check the gas switch and the locks so many times that he gets late for work or is unable to sleep at night. Though he knows that the task is complete, his compulsive, repetitive behaviour continues.

Perfectionism and need for symmetry

A person has a need to do or arrange things “perfectly”. Items on his desk have to be placed in a certain way; or his shoes may need to be stacked in an exact order. He may need to perform certain actions or behaviours a certain number of times or in a precise order to have a sense of ‘completeness’. A child with OCD may worry that his homework is ‘not quite right’ and spend hours checking, erasing and re-doing his work because his T’s are not crossed properly. A person at work may feel that the day will go badly for him if he does not take a certain number of steps (say in multiples of seven) to his desk.

Concern about illness and disease

A person may have an irrational fear of developing a serious or incurable illness-usually HIV, heart disease or cancer. He may consult doctors and visit hospitals repeatedly. Despite normal medical reports and reassurance he will get investigations done again and again.

Distressing sexual thoughts and images

'Sinful' religious images are other common obsessions. This specially occurs near religious places or during religious rites and rituals. He may feel intense guilt and avoid such places or services in the future.

OCD Treatment

Treatment of OCD consists of cognitive behaviour therapy (CBT) and medication. OCD treatment is best done as early as possible, as chronic OCD can affect daily life, work and relationships. CBT is essential for all patients with OCD. CBT tackles the obsessive thoughts [Cognitions-C]; the compulsive behaviours [B] in a methodical way [Therapy-T]. CBT by itself can reduce symptoms and delay or prevent relapses.

OCD medication may be required when symptoms are moderate or severe. Medication for obsessive compulsive disorder is usually combined with CBT. The outcome of therapy also depends on family support; and the patient’s own insight, motivation and readiness for change.