Hi. Thank you for your question. But Difficulty finding the right words to express your thoughts can be caused by various factors, including:

1. Anxiety or Stress: High levels of stress or anxiety can affect your ability to articulate thoughts clearly.
2. Cognitive Fatigue: Mental exhaustion or fatigue can make it harder to access and convey information.
3. Medical Conditions: Conditions like aphasia, dysarthria, or certain neurological disorders can affect speech and language abilities.
4. Medications: Some medications may have side effects that impact speech and cognitive function.
5. Lack of Sleep: Sleep deprivation can impair cognitive function and hinder verbal expression.
6. Language Processing Issues: Some individuals may have difficulties with language processing, making it challenging to find the right words.
If this issue persists or is concerning, it’s advisable to consult a healthcare professional or a speech therapist for a proper evaluation and guidance on addressing the underlying cause.

To get a better understanding of the pathology, we need a few testing MRI brains. EEG. Labs. Probably neuropsychological testing.speech evaluation.