You can find many anecdotal stories about how Cannabidiol (CBD) has helped someone with pain, anxiety, etc. There are some studies being done about the effectiveness of CBD. Following are topics and the research that been done on those topics.

We are presenting the following chart for your information. In no way is this information meant as a substitute for or alternative to information from health care practitioners.
ADD / ADHDImpact of ADHD and Cannabis Use on Executive Functioning in Young Adults
AddictionCannabidiol for the Treatment of Cannabis Withdrawal Syndrome: A Case Report
AddictionCannabidiol Reduces Cigarette Consumption in Tobacco Smokers: Preliminary Findings
AlzheimersCannabinoids for the Treatment of Dementia
AnxietyPlant-based Medicines for Anxiety Disorders, Part 2: A Review of Clinical Studies With Supporting Preclinical Evidence
ArthritisPreliminary Assessment of the Efficacy, Tolerability and Safety of a Cannabis-Based Medicine (Sativex) in the Treatment of Pain Caused by Rheumatoid Arthritis
AsthmaThe Role of Cannabinoids in Inflammatory Modulation of Allergic Respiratory Disorders, Inflammatory Pain and Ischemic Stroke
AutismEndocannabinoid Signaling in Autism
AutismA Novel Approach to the Symptomatic Treatment of Autism
CancerCannabidiol as potential anticancer drug
CancerThe Inhibitory Effects of Cannabidiol on Systemic Malignant Tumors
Colitis & Crohn’sCannabis Finds Its Way Into Treatment of Crohn’s Disease
DepressionAntidepressant-like Effect of delta9-tetrahydrocannabinol and Other Cannabinoids Isolated From Cannabis Sativa L
DepressionThe Therapeutic Potential of the Endocannabinoid System for the Development of a Novel Class of Antidepressants
DiabetesThe Endocannabinoid System in Obesity and Type 2 Diabetes
DiabetesThe Endocannabinoid System and Plant-Derived Cannabinoids in Diabetes and Diabetic Complications
EpilepsyCannabidiol: Promise and Pitfalls
EpilepsyThe Cannabinoids as Potential Antiepileptics
Heart DiseaseCannabidiol, a Nonpsychoactive Cannabis Constituent, Protects Against Myocardial Ischemic Reperfusion Injury
Heart DiseaseIs the Cardiovascular System a Therapeutic Target for Cannabidiol?
Huntington’s Prospects for Cannabinoid Therapies in Basal Ganglia Disorders
InflammationCannabidiol as an Emergent Therapeutic Strategy for Lessening the Impact of Inflammation on Oxidative Stress
InflammationCannabidiol Reduces Intestinal Inflammation Through the Control of Neuroimmune Axis
Kidney DiseaseCannabidiol Attenuates Cisplatin-Induced Nephrotoxicity by Decreasing Oxidative/Nitrosative Stress, Inflammation, and Cell Death
Liver DiseaseThe Endocannabinoid System and Liver Diseases
Liver DiseaseCannabidiol Causes Activated Hepatic Stellate Cell Death Through a Mechanism of Endoplasmic Reticulum Stress-Induced Apoptosis
MigraineCannabinoids and Hallucinogens for Headache
MigraineThe Endocannabinoid System and Migraine
Mood DisordersThe Endocannabinoid System and Psychiatric Disorders
Mood DisordersThe Endocannabinoid System and the Treatment of Mood and Anxiety Disorders
Mood DisordersEffects of Cannabidiol (CBD) on Regional Cerebral Blood Flow
Multiple SclerosisMeta-analysis of Cannabis Based Treatments for Neuropathic and Multiple Sclerosis-Related Pain
Multiple SclerosisOromucosal delta9-tetrahydrocannabinol/cannabidiol for Neuropathic Pain Associated With Multiple Sclerosis: An Uncontrolled, Open-Label, 2-year Extension Trial
NauseaCannabidiol, a non-psychotropic component of cannabis, attenuates vomiting and nausea-like behaviour via indirect agonism of 5-HT1A somatodendritic autoreceptors in the dorsal raphe nucleus
NauseaRegulation of Nausea and Vomiting by Cannabinoids and the Endocannabinoid System
NauseaRegulation of Nausea and Vomiting by Cannabinoids
NauseaPreliminary Efficacy and Safety of an Oromucosal Standardized Cannabis Extract in Chemotherapy-Induced Nausea and Vomiting
PainPot Users Less Likely to Take Painkillers
PainCannabinoids Suppress Inflammatory and Neuropathic Pain by Targeting α3 Glycine Receptors
PainCannabinoids in the Management of Difficult to Treat Pain
Parkinsons Prospects for Cannabinoid Therapies in Basal Ganglia Disorders
PTSDCannabinoid Modulation of Fear Extinction Brain Circuits: A Novel Target to Advance Anxiety Treatmen
PTSDReductions in Circulating Endocannabinoid Levels in Individuals With Post-Traumatic Stress Disorder Following Exposure to the World Trade Center Attacks
SchizophreniaCannabis Drug Shows Promise in Treating Schizophrenia
SchizophreniaCannabidiol, a Cannabis Sativa Constituent, as an Antipsychotic Drug
Skin ConditionsEndocannabinoids Modulate Human Epidermal Keratinocyte Proliferation and Survival via the Sequential Engagement of Cannabinoid receptor-1 and Transient Receptor Potential vanilloid-1
Skin ConditionsCannabidiol Exerts Sebostatic and Antiinflammatory Effects on Human Sebocytes
Sleep DisordersEndocannabinoid Modulation of Cortical Up-States and NREM Sleep
Sleep DisordersThe Nonpsychoactive Cannabis Constituent Cannabidiol Is a Wake-Inducing Agent
StressEndocannabinoids and stress
StressLow-frequency Stimulation Evokes Serotonin Release in the Nucleus Accumbens and Induces Long-Term Depression via Production of Endocannabinoid
StrokeCannabis and Cannabinoid Biology in Stroke: Controversies, Risks, and Promises
TBICannabidiol, a Nonpsychoactive Cannabis Constituent, Protects Against Myocardial Ischemic Reperfusion Injury