Primary progressive aphasia involves many losses: Here’s what you need to know

When you think about progressive brain disorders that cause dementia, you usually think of memory problems. But sometimes language problems — also known as aphasia — are the first symptom.

What’s aphasia?

Aphasia is a disorder of language because of injury to the brain. Strokes (when a blood clot blocks off an artery and a part of the brain dies) are the most common cause, although aphasia may also be caused by traumatic brain injuries, brain tumors, encephalitis, and almost anything else that damages the brain, including neurodegenerative diseases.

How neurodegenerative diseases cause aphasia

Neurodegenerative diseases are disorders that slowly and relentlessly damage the brain. After ruling out a brain tumor with an MRI scan, you can usually tell when aphasia is from a neurodegenerative disease, rather than a stroke or other cause, by its time course: Strokes happen within seconds to minutes. Encephalitis presents over hours to days. Neurodegenerative diseases cause symptoms over months to years.

Alzheimer’s disease is the most common neurodegenerative disease, but there are other types as well, such as frontotemporal lobar degeneration. Different neurodegenerative diseases damage different parts of the brain and cause different symptoms. When a neurodegenerative disease causes problems with language first and foremost, it is called primary progressive aphasia.

How is primary progressive aphasia diagnosed?

Primary progressive aphasia is generally diagnosed by a cognitive behavioral neurologist and/or a neuropsychologist who specializes in late-life disorders. The evaluation should include a careful history of any language and other problems that are present; a neurological examination; pencil-and-paper testing of thinking, memory, and language; blood tests to rule out vitamin deficiencies, thyroid disorders, infections, and other medical problems; and an MRI scan to look for strokes, tumors, and other abnormalities that can affect the brain’s structure.

The general criteria for primary progressive aphasia include:

  • difficulty with language is the most prominent clinical feature at the onset and initial phases of the neurodegenerative disease
  • these language problems are severe enough to cause impaired day-to-day functioning
  • other disorders that could cause language problems have been looked for and are not present.

There are three major variants of primary progressive aphasia

Primary progressive aphasia is divided into different variants based on which aspect of language is disrupted.

Logopenic variant primary progressive aphasia causes word-finding difficulties. Individuals with this variant have trouble finding common, everyday words such as a table, chair, blue, knee, celery, and honesty. They know what these words mean, however.

Semantic variant primary progressive aphasia causes difficulty in understanding what words mean. When given the word, individuals with this variant may not understand what a table or chair is, which color is blue, where to find their knee, what celery is good for, and what honesty means.

Nonfluent/agrammatic variant primary progressive aphasia causes effortful, halting speech in which individuals know what they want to say but cannot get the words out. When they can get words out, their sentences often have incorrect grammar. Although they know what the individual words mean, they may have trouble understanding a sentence with complex grammar, such as, “The lion was eaten by the tiger.”

Different primary progressive aphasia variants are caused by different diseases

These primary progressive aphasia variants are not diseases themselves. They are symptoms of brain problems. Not sure what I mean? Consider three other symptoms: fever, headache, and chest pain. As you know, each of these symptoms may be caused by different underlying diseases.

The logopenic variant of primary progressive aphasia is usually caused by Alzheimer’s disease. Does that surprise you? What this means is that although Alzheimer’s disease typically begins with memory loss, in some individuals it can start with trouble finding words. Memory problems typically begin a few years later. (Why do we call it Alzheimer’s disease if it doesn’t start with memory problems? Because Alzheimer’s disease is defined by the pathology that we see under the microscope when we examine the brain tissue, not by its symptoms.)

The semantic variant of primary progressive aphasia is usually caused by frontotemporal lobar degeneration, and specifically by an accumulation of TDP-43. TDP-43 is an abnormal protein that accumulates in — and ultimately kills — brain cells.

The nonfluent/agrammatic variant of primary progressive is also usually caused by frontotemporal lobar degeneration, but this time it is most often due to tau pathology. Tau accumulation leads to tangles inside cells that damage and then destroy them.

Can primary progressive aphasia be treated?

The treatments available for primary progressive aphasia are generally strategies and systems to help individuals with these disorders communicate better.

  • Thinking of information related to the word they are looking for can sometimes help individuals with logopenic variant primary progressive aphasia. For example, if they are searching for the word lion, thinking of yellow, Africa, big cat, mane, and similar words may help.
  • Using your tone of voice, facial expression, and body language can be helpful to communicate with individuals with semantic variant primary progressive aphasia, as can pantomiming the message you are trying to convey.
  • Using pictures, either on paper or in a tablet-based application, can be helpful to individuals with all variants of primary progressive aphasia.

Unfortunately, there are no cures for primary progressive aphasia and no medications that have been shown to be effective. Most patients with primary progressive aphasia develop other cognitive problems over time, leading to more general dementia.

If you suspect that you (or your loved one) may have primary progressive aphasia, start by meeting with your doctor. If your doctor is concerned, they will send you (or your loved one) to the right specialist.

Bible verses for today’s meditation and inspiration: Matthew E. McLaren

2 Corinthians 13:9 For we rejoice when we ourselves are weak but you are strong; this we also pray for, that you be made complete.

Colossians 1:28 We proclaim Him, admonishing every man and teaching every man with all wisdom, so that we may present every man complete in Christ.

Colossians 4:12 Epaphras, who is one of your number, a bondslave of Jesus Christ, sends you his greetings, always laboring earnestly for you in his prayers, that you may stand perfect and fully assured in all the will of God.

2 Corinthians 10:15-16 not boasting beyond our measure, that is, in other men’s labors, but with the hope that as your faith grows, we will be, within our sphere, enlarged even more by you, so as to preach the gospel even to the regions beyond you, and not to boast in what has been accomplished in the sphere of another.

2 Thessalonians 1:3 We ought always to give thanks to God for you, brethren, as is only fitting, because your faith is greatly enlarged, and the love of each one of you toward one another grows ever greater;

2 Peter 3:18 but grow in the grace and knowledge of our Lord and Savior Jesus Christ To Him be the glory, both now and to the day of eternity. Amen.

Ephesians 1:17-18 that the God of our Lord Jesus Christ, the Father of glory, may give to you a spirit of wisdom and of revelation in the knowledge of Him. I pray that the eyes of your heart may be enlightened so that you will know what is the hope of His calling, what are the riches of the glory of His inheritance in the saints,

Ephesians 3:16-19 that He would grant you, according to the riches of His glory, to be strengthened with power through His Spirit in the inner man, so that Christ may dwell in your hearts through faith; and that you, being rooted and grounded in love, may be able to comprehend with all the saints what is the breadth and length and height and depth, read more

Recommended contacts for prayer requests and Bible study

www.agapetemplesda.com

www.adventistontario.org

https://www.hopechannel.com/au/learn/courses

breathoflife.tv/

https://3abn.org/all-streams/3abn.html

http://www.nadadventist.org/article/15/contact-us

https://www.adventist.org/en/utility/contact/

It Is Written

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