What is the current psychiatric diagnosis for this 19‑year‑old patient presenting with worsening anxiety, severe agoraphobia, recurrent panic attacks, generalized anxiety symptoms, and a mild major depressive episode?

Current Psychiatric Diagnosis

This patient meets DSM-5 criteria for Panic Disorder with Agoraphobia (ICD F40.01) as the primary diagnosis, with comorbid Generalized Anxiety Disorder (ICD F41.1) and Major Depressive Disorder, mild to moderate severity. 1

Diagnostic Reasoning

Primary Diagnosis: Panic Disorder with Agoraphobia

The clinical presentation clearly demonstrates the core features of panic disorder with agoraphobia 1:

• Recurrent panic attacks characterized by abrupt surges of intense fear with physical manifestations (gastrointestinal distress, restlessness, fidgeting)
• Severe agoraphobia with excessive fear about being in situations where escape might be difficult—she cannot leave the house for more than 5 minutes, avoids driving, and experiences overwhelming anxiety when attempting to go outside
• Marked functional impairment—she withdrew from cosmetology school and requires her sister for daily needs
• The temporal relationship is classic: panic attacks preceded and drove the agoraphobic avoidance behavior 2, 3

The severity is extreme, with her needing to immediately return home when attempting to leave, sometimes screaming or calling for transportation. This represents the typical development where agoraphobia appears as a complication of panic disorder 2.

Comorbid Diagnoses

Generalized Anxiety Disorder is evident through:

• Lifelong history of excessive, uncontrollable worries
• Intrusive thoughts of worst-case scenarios
• Persistent anticipatory anxiety beyond just panic-related fears
• The anxiety extends to "numerous everyday situations" beyond agoraphobic triggers 1

Major Depressive Disorder (recently diagnosed, mild to moderate):

• This is highly consistent with the literature showing 68% of patients with agoraphobia/panic disorder develop major depression 4
• In 85% of cases, this presents as endogenous-type depression 4
• Her depression appears secondary to the anxiety disorder given the temporal sequence

Critical Clinical Context

Substance Use as Confounding Factor

The abrupt discontinuation of all psychiatric medications in [DATE], combined with marijuana cessation attempts, created a perfect storm. Cannabis withdrawal can unmask or worsen underlying anxiety disorders, and stopping sertraline, lamotrigine, and amitriptyline simultaneously likely precipitated the severe decompensation. The fact that symptoms have not improved since restarting medications suggests either:

• Insufficient time at therapeutic doses
• Need for dose optimization
• Possible kindling effect from the medication discontinuation

Developmental Considerations

Her childhood symptoms (homesickness, difficulty spending nights away) suggest early separation anxiety that evolved into more complex anxiety pathology 1, 5. The onset of daily marijuana use at age 14-15 was likely self-medication for escalating anxiety symptoms.

Differential Considerations and Ruled Out

Bipolar disorder was appropriately considered given:

• Family history of mood disorders
• Past use of lamotrigine (mood stabilizer)
• Episodes of irritability and mood lability

However, these symptoms appear more consistent with anxiety-driven irritability rather than true manic/hypomanic episodes. No evidence of elevated mood, decreased need for sleep, grandiosity, or increased goal-directed activity.

Substance-induced anxiety disorder 1 is less likely as the primary diagnosis because:

• Symptoms preceded heavy substance use (childhood onset)
• Symptoms persist well beyond acute withdrawal periods
• The pattern is more consistent with primary anxiety disorders

Clinical Pitfalls to Avoid

1. Do not dismiss the severity of agoraphobia—her inability to leave the house for more than 5 minutes represents extreme functional impairment requiring intensive intervention 2

2. Do not overlook the medication discontinuation history—abrupt cessation of SSRIs and other psychotropics can cause protracted withdrawal syndromes and treatment resistance

3. Do not attribute all symptoms to substance use—while marijuana and nicotine complicate the picture, her anxiety disorder clearly predates and persists beyond substance use 1

4. Monitor for psychotic symptoms—while she currently denies perceptual disturbances, the case report literature 6 suggests anxiety disorders in transitional age youth can occasionally progress to psychotic symptoms, particularly with this level of severity and functional decline