A patient is brought to the casualty in the state of altered sensorium. He was on lithium treatment for effective fits. On examination, he has tremors, increased TR’s and incontinence of urine. He has also undergone an episode of severe gastroenteritis 2 days ago. The serum lithium was found to be 1.95 meq/Lit. The probable cause for his present state is :

**Core Concept**
Lithium toxicity is a serious condition that can occur in patients taking this medication, particularly when there is a disruption in renal function or fluid balance.

**Why the Correct Answer is Right**
The patient's presentation of altered sensorium, tremors, increased tremors (TRs), and incontinence of urine suggests lithium toxicity. The serum lithium level of 1.95 meq/L is elevated, which is above the therapeutic range. The recent episode of severe gastroenteritis may have led to dehydration and reduced renal function, causing lithium levels to rise. Lithium is primarily excreted by the kidneys, and any impairment in renal function can lead to lithium accumulation and toxicity.

**Why Each Wrong Option is Incorrect**
* **Option A:** This option is not provided, so we can't evaluate it.
* **Option B:** This option is also not provided, so we can't evaluate it.
* **Option C:** This option is not provided, so we can't evaluate it.
* **Option D:** This option is also not provided, so we can't evaluate it.

**Clinical Pearl / High-Yield Fact**
Lithium toxicity can be treated with hemodialysis, which can help remove excess lithium from the body. It's essential to monitor serum lithium levels regularly, especially in patients with renal impairment or those who are dehydrated.

**Correct Answer:**
(Note: Since the options are not provided, we can't give a specific answer. Please provide the options for a complete explanation.)

✓ Correct Answer: A. Lithium toxicity