• An inflammation of the hair follicle.
  Harvard Dictionary of Health Terms
  Harvard Medical Publishing, 2011
• Inflammation of a follicle (a sac or pouch-like cavity), usually a hair follicle.
  NCI Dictionary of Cancer Terms
  U.S. National Cancer Institute, 2021
• Inflammation of follicles, primarily hair follicles.
  NLM Medical Subject Headings
  U.S. National Library of Medicine, 2021
• Inflammation of the hair follicles. Causes include excessive perspiration, skin infections, and skin wounds.
  NCI Thesaurus
  U.S. National Cancer Institute, 2021
• Inflammatory cells within the wall and ostia of the hair follicle, creating a follicular-based pustule.
  Human Phenotype Ontology (HPO)
  The Human Phenotype Ontology Project, 2021
• A disorder characterized by inflammation or infection of the hair follicles.
  Common Terminology Criteria for Adverse Events
  U.S. National Institutes of Health, 2021
• Folliculitis is an infection of hair follicles. Diagnosis is clinical. Treatment is with topical clindamycin. The etiology of folliculitis is often unclear, but perspiration, trauma, friction, and occlusion of the skin are known to potentiate infection. The pathogen may be bacterial, fungal, viral, or parasitic. Bacterial folliculitis is...
  Merck Manuals
  Merck & Co., Inc., 2020
• Folliculitis is defined histologically as the presence of inflammatory cells within the wall and ostia of the hair follicle, creating a follicular-based pustule. The actual type of inflammatory cells can vary and may be dependent on the etiology of the folliculitis, the stage at which the biopsy specimen was obtained, or both.
  Medscape
  WebMD, 2019
• Folliculitis is a common skin condition in which hair follicles become inflamed. It's usually caused by a bacterial or fungal infection. At first it may look like small red bumps or white-headed pimples around hair follicles - the tiny pockets from which each hair grows. The infection can spread and turn into nonhealing, crusty sores.
  Mayo Clinic
  Mayo Foundation for Medical Education and Research
• Folliculitis is an inflammatory process involving any part of the hair follicle. Most cases are secondary to infection. It is important to recognize noninfectious causes of folliculitis (e.g., eosinophilic folliculitis) as well as folliculitis primarily involving the scalp (e.g., folliculitis decalvans). The condition manifests...
  Epocrates
  Athenahealth, Inc., 2019