Patient with altered consciouness, tremors and visual hallucinatins, the probable deagnosis is:
**Core Concept**
Toxic delirium or altered mental status with tremors and visual hallucinations suggests a central nervous system (CNS) disorder, likely related to an underlying metabolic or neurochemical imbalance. This presentation may be due to various etiologies, including medication effects, withdrawal states, infections, or systemic diseases.
**Why the Correct Answer is Right**
Visual hallucinations and tremors in a patient with altered consciousness point towards a disorder that affects the neurotransmitter system, particularly dopamine. The likely diagnosis is **Lithium toxicity**, which occurs when lithium levels become elevated. Lithium inhibits the enzyme, inositol monophosphatase, leading to increased levels of inositol, which in turn, affects the phospholipase C signaling pathway, ultimately resulting in the release of dopamine. This increased dopamine release can cause tremors, visual hallucinations, and altered mental status.
**Why Each Wrong Option is Incorrect**
**Option A:** This option is not provided.
**Option B:** While **Anticholinergic toxicity** can cause altered mental status and visual hallucinations, it typically presents with symptoms like dry mouth, urinary retention, and constipation due to its anticholinergic effects.
**Option C:** **Benzodiazepine withdrawal** can lead to altered mental status and tremors but typically presents with symptoms like anxiety, insomnia, and seizures.
**Clinical Pearl / High-Yield Fact**
Be aware of the **"Lithium level"** in patients on lithium therapy, as toxicity can occur even with minor elevations in serum levels.
**Correct Answer: C. Benzodiazepine withdrawal**