one drug is responsible.
## 13. Corticosteroids
Corticosteroids can sometimes affect:
* Sleep
* Mood
* Concentration
* Behavior
At higher doses, some people can develop significant psychological or cognitive symptoms.
These effects are different from permanent memory loss, and the risk depends on the medication, dose, duration, and individual susceptibility.
## 14. Lithium
Lithium can be an effective treatment for bipolar disorder.
Some people taking it report:
* Cognitive slowing
* Reduced concentration
* Mental “fog”
However, lithium toxicity can also cause serious neurological symptoms and requires urgent medical attention.
Regular monitoring is important because blood levels need
