# The Epidemiology, Management, and the Associated Burden of Related Conditions in Alopecia Areata

> **NCT04239521** · — · COMPLETED · sponsor: **Momentum Data** · enrollment: 51955 (actual)

## Conditions studied

- Alopecia Areata
- Depressive Episode
- Recurrent Depressive Disorder
- Anxiety Disorders
- Atopic Dermatitis
- Allergic Rhinitis
- Asthma
- Crohn Disease
- Ulcerative Colitis
- Pernicious Anemia
- Type 1 Diabetes
- Hashimoto Thyroiditis
- Graves Disease
- Rheumatoid Arthritis
- Psoriatic Arthritis
- Ankylosing Spondylitis
- Systemic Lupus Erythematosus
- Polymyalgia Rheumatica
- Sjogren's Syndrome
- Psoriasis
- Vitiligo
- Multiple Sclerosis
- Celiac Disease
- Upper Respiratory Tract Infection
- Influenza
- Lower Resp Tract Infection
- Acute Bronchitis
- Pneumonia
- Gastrointestinal Infection
- Skin Infection
- Urinary Tract Infections
- Genital Infection
- Herpes Zoster
- Herpes Simplex
- Infection
- Infection Viral

## Interventions

- **OTHER:** Exposure of interest (studies 2 & 3).

## Key facts

- **NCT ID:** NCT04239521
- **Lead sponsor:** Momentum Data
- **Sponsor class:** INDUSTRY
- **Phase:** —
- **Study type:** OBSERVATIONAL
- **Status:** COMPLETED
- **Start date:** 2020-10-01
- **Primary completion:** 2022-03-31
- **Final completion:** 2022-11-28
- **Target enrollment:** 51955 (ACTUAL)
- **Last updated:** 2022-12-15

## Collaborators

- [object Object]
- [object Object]
- [object Object]

## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT04239521

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT04239521, "The Epidemiology, Management, and the Associated Burden of Related Conditions in Alopecia Areata". Retrieved via AI Analytics 2026-06-14 from https://api.ai-analytics.org/clinical/NCT04239521. Licensed CC0.

---

*[Clinical trials dataset](/datasets/clinical-trials) · CC0 1.0*