Aphasia is a loss of language skills. It may occur if the brain is damaged. This usually happens after a stroke. People with aphasia may not be able to express their thoughts (expressive aphasia) or understand others (receptive aphasia).

Signs of aphasia vary with each person. A person with aphasia may show some or all of the signs listed below.
Understand words when others speak
Speak in complete sentences
Read or write
Understand that numbers have meaning
Speak using only nouns and verbs
Mix up the order of words in a sentence
Use the wrong words or made-up words
Have trouble working with numbers, as when balancing a checkbook
A person with aphasia can still think, even if responding is hard. Try to:
Ask questions that can be answered with a “yes” or a “no.”
Speak slowly and clearly in simple sentences. Use simple words, but don’t “talk down.”
Give the person time to understand and to respond. Try not to speak for the person unless you have to.