Differential Diagnosis for Gavin
- Single most likely diagnosis
- Major Depressive Disorder (MDD): Gavin's symptoms of extreme self-loathing, negative self-image, depressed mood, low energy, disturbed sleep, and insufficient appetite are consistent with MDD. The presence of suicidal thoughts, although without intent or plan, further supports this diagnosis. The history of trauma and substance use also aligns with common comorbidities and risk factors for MDD.
- Other Likely diagnoses
- Post-Traumatic Stress Disorder (PTSD): Given Gavin's history of trauma from their father and stepbrother, PTSD is a likely consideration. Symptoms such as intrusive thoughts, visual disturbances, and feelings of paranoia could be related to PTSD, especially in the context of their traumatic experiences.
- Substance Use Disorder: Gavin's frequent use of marijuana and occasional use of alcohol, which they believe helps manage their mood, suggests a substance use disorder. This could be contributing to their depressive symptoms and complicating their mental health picture.
- Borderline Personality Disorder: The presence of intense self-loathing, negative self-image, and feelings of anger towards their past self, along with a history of trauma, might suggest borderline personality disorder. However, a comprehensive assessment of interpersonal relationships, impulsivity, and identity issues would be necessary to confirm this diagnosis.
- Do Not Miss diagnoses
- Bipolar Disorder: Although Gavin mentions some elevation in mood attributed to substance use, it's crucial to assess for bipolar disorder, especially given the prescription of Abilify, which is sometimes used in treating bipolar disorder. Missing a bipolar diagnosis could lead to inappropriate treatment and worsening of symptoms.
- Psychotic Disorder: The occasional visual disturbances and internal monologues could indicate a psychotic disorder, such as schizophrenia or a schizoaffective disorder. These conditions require specific treatment approaches and missing them could lead to significant morbidity.
- Suicidal Ideation with Intent: While Gavin reports no intent or plan to act on suicidal thoughts, the presence of these thoughts, especially in the context of depression and trauma, necessitates careful monitoring and possibly a safety plan to prevent suicide.
- Rare diagnoses
- Schizotypal Personality Disorder: This diagnosis might be considered due to Gavin's occasional visual disturbances and paranoid feelings about the universe. However, this would require a more detailed assessment of their personality traits and behaviors over time.
- Dissociative Disorder: Given the history of trauma, a dissociative disorder could be a possibility, especially if Gavin experiences significant dissociative symptoms not fully captured in the initial description. A comprehensive trauma and dissociation assessment would be necessary.