**Question:** A 42 year old male with a past history of a manic episode presents with an illness of 1 month duration characterized by depressed mood, anhedonia and profound psychomotor retardation. The most appropriate management strategy is prescribing a combination of:

A. Lithium + Carbamazepine
B. Lithium + Valproic Acid
C. Quetiapine + Olanzapine
D. Fluoxetine + Bupropion

**Correct Answer:** **A. Lithium + Carbamazepine**

**Core Concept:**
Manic episodes are a key feature of bipolar disorder, a mood disorder characterized by episodes of mania and/or depression. The treatment of bipolar disorder involves both stabilizing the mood and addressing specific symptoms. In the context of this question, we are treating the current depressive episode in a patient with a history of mania. The choice of medication and combination depends on the severity of the episode, patient's response, and potential side effects.

**Why the Correct Answer is Right:**
Lithium and Carbamazepine are commonly used as a combination therapy for bipolar disorder, particularly in the treatment of depressive episodes. Lithium acts as a mood stabilizer and helps in preventing depressive episodes and rapid cycling. Carbamazepine helps in treating depressive symptoms, aggression, and agitation. The combination of Lithium and Carbamazepine has been shown to be effective in treating bipolar disorder, particularly in the treatment of depressive episodes.

**Why Each Wrong Option is Incorrect:**

**Option B: Lithium + Valproic Acid**
While Valproic Acid is a mood stabilizer, it is not typically chosen as a first-line treatment for bipolar disorder, particularly in the context of a depressive episode. Valproic Acid is primarily used for epilepsy, and its combination with Lithium may lead to an increased risk of hyponatremia (low sodium levels).

**Option C: Quetiapine + Olanzapine**
Quetiapine and Olanzapine are atypical antipsychotics used for treating schizophrenia and bipolar disorder, but their combination may lead to an increased risk of weight gain, hyperprolactinemia, and extrapyramidal side effects.

**Option D: Fluoxetine + Bupropion**
Fluoxetine is a selective serotonin reuptake inhibitor (SSRI) used for treating depression, while Bupropion is an antidepressant with dopaminergic and noradrenergic activity. While their combination may provide additional benefits, the combination may also lead to increased risk of seizures and weight gain.

**Core Concept:**
The correct combination involves using two medications with different mechanisms of action to achieve a balance between mood stabilization and antidepressant effects. Lithium and Carbamazepine are a suitable choice due to their diverse mechanisms of action and relatively lower side effects compared to the other options.

**Why the Correct Answer is Right:**
The combination of Lithium and Carbamazepine addresses both mood stabilization (Lithium) and antide