Please select the eligibility criteria that correspond to the clinical trial below.
Title: A Double-blind, Placebo-controlled Study of Naltrexone in Trichotillomania
Brief Summary: This is an 8-week, double-blind study of Natrexone in the treatment of trichotillomania


Options:
A: Inclusion Criteria:

1. men and women age 18-75;
2. current DSM-IV trichotillomania;
3. hair-pulling primarily due to urges/cravings; and 4) pulling is reported as pleasurable the majority of time.

Exclusion Criteria:

1. unstable medical illness or clinically significant abnormalities on pre-study laboratory tests or physical examination;
2. history of seizures;
3. myocardial infarction within 6 months;
4. current pregnancy or lactation, or inadequate contraception in women of childbearing potential;
5. clinically significant suicidality;
6. current or recent (past 3 months) DSM-IV substance abuse or dependence;
7. illegal substance within 2 weeks of study initiation;
8. initiation of psychotherapy or behavior therapy from a mental health professional for the treatment of trichotillomania within 3 months prior to study baseline;
9. initiation of a psychotropic medication within 2 months prior to study inclusion;
10. previous treatment with naltrexone; and
11. treatment with investigational medication or depot neuroleptics within 3 months, with fluoxetine within 6 weeks, or with other psychotropics within 2 weeks prior to study baseline;
12. lifetime history of DSM-IV bipolar disorder type I, dementia, or schizophrenia or any other DSM-IV psychotic disorder;
13. current use of opiates.
B: Inclusion Criteria:

1. Age 18-65 years
2. Obsessive-compulsive disorder (OCD), Trichotillomania (TTM), or Pathological Skin Picking (PSP) as the primary psychiatric diagnosis
3. (If OCD) - Subject reports ≥two failed treatments using selective serotonin reuptake inhibitors (SSRIs) for their OCD
4. Women's participation required negative results on a beta-human chorionic gonadotropin pregnancy test and stable use of a medically accepted form of contraception.
5. Signed informed consent before entry into the study.

Exclusion Criteria:

1. Unstable medical illness or clinically significant abnormalities on laboratory tests or physical examination at screening visit
2. Current pregnancy or lactation, or inadequate contraception in women of childbearing potential
3. A need for medication other than dronabinol with possible psychotropic effects
4. History of hypersensitivity to any cannabinoid or sesame oil
5. Lifetime history of bipolar disorder type I or II, dementia, or schizophrenia as determined by the Structured Clinical Interview for DSM-IV
6. Current (past 12-months) DSM-IV substance abuse or dependence
7. Positive urine drug screen at screening
8. Initiation of cognitive behavior therapy within 3 months prior to study baseline
9. Baseline score of ≥ 17 on the Hamilton Depression Rating Scale (17-item HDRS
10. Suicidality based on clinical interview
11. History of head injury or neurological disorder (such as seizures)
C: Inclusion Criteria:

* Children aged 8-17 years.
* Primary DSM-IV diagnosis of trichotillomania or chronic hair pulling.
* Duration of trichotillomania greater than 6 months.

Exclusion Criteria:

* Comorbid bipolar disorder, psychotic disorder, substance use disorder, developmental disorder or mental retardation (IQ\<70).
* Recent change (less than 4 weeks) in medications that have potential effects on TTM severity (such as SSRIs, CMI, naltrexone, lithium, psychostimulants, anxiolytics, or antipsychotics). Medication change is defined to include either dose changes or medication discontinuation.
* Asthma requiring medication use within the last 6 months.
* Known hypersensitivity or previous anaphylactoid reaction to acetylcysteine or any components in its preparation
* Current use (within last week) of psychostimulant medications.
* Positive pregnancy test or drug screening test
D: Inclusion Criteria:

* men and women age 18-65;
* current DSM-IV trichotillomania

Exclusion Criteria:

* unstable medical illness;
* history of seizures;
* myocardial infarction within 6 months;
* current pregnancy or lactation, or inadequate contraception in women of childbearing potential;
* any thoughts of suicide;
* lifetime history of DSM-IV bipolar disorder type I, dementia, or schizophrenia or any other DSM-IV psychotic disorder;
* previous treatment with N-Acetyl Cysteine;
* treatment with investigational medication or depot neuroleptics within 3 months, with fluoxetine within 6 weeks, or with other psychotropics within 2 weeks prior to study baseline;
* 9) diagnosis of asthma

Answer: A