WordNet
- inflammation of a hair follicle
Wikipedia preview
出典(authority):フリー百科事典『ウィキペディア（Wikipedia）』「2018/03/25 09:30:24」(JST)
wiki en
| Folliculitis | |
|---|---|
| Folliculitis, single lesion | |
| Classification and external resources | |
| Specialty | Dermatology |
| ICD-10 | L73.9 (ILDS L73.91) |
| ICD-9-CM | 704.8 |
| DiseasesDB | 31367 |
| MedlinePlus | 000823 |
| eMedicine | derm/159 |
| Patient UK | Folliculitis |
| MeSH | D005499 |
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[edit on Wikidata]
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Folliculitis is the infection and inflammation of one or more hair follicles. The condition may occur anywhere on the skin except the palms of the hands and soles of the feet. The rash may appear as pimples that come to white tips on the face, chest, back, arms, legs, buttocks, and head.
Contents
- 1 Signs and symptoms
- 2 Causes
- 2.1 Bacterial
- 2.2 Fungal
- 2.3 Viral
- 2.4 Non-infectious
- 3 Treatment
- 4 See also
- 5 References
- 6 External links
Signs and symptoms
- rash (reddened skin area)
- itching skin
- pimples or pustules located around a hair follicle; may be confused with chicken pox
- may crust over
- typically occur on neck, armpit, or groin
- may present as genital lesions
- spreading from leg to arm to body through improper treatment with antibiotics
Causes
Most carbuncles, boils, and other cases of folliculitis develop from Staphylococcus aureus.
Folliculitis starts with the introduction of a skin pathogen to a hair follicle. Hair follicles can also be damaged by friction from clothing, an insect bite,[1] blockage of the follicle, shaving, or braids too tight and too close to the scalp. The damaged follicles are then infected by Staphylococcus. Folliculitis can affect people of all ages.
Iron deficiency anemia is sometimes associated with chronic cases.
Bacterial
- Staphylococcus aureus folliculitis.
- Hot-tub folliculitis is caused by the bacterium Pseudomonas aeruginosa.[2] The folliculitis usually occurs after sitting in a hot tub that was not properly cleaned before use. Symptoms are found around the body parts that sit in the hot tub: the legs, hips, chest, buttocks, and surrounding areas. Symptoms are amplified around regions that were covered by wet clothing, such as bathing suits.
- Sycosis vulgaris, Sycosis barbae or Barber's itch is a staphylococcus infection of the hair follicles in the bearded area of the face, usually the upper lip. Shaving aggravates the condition.
- Gram-negative folliculitis may appear after prolonged acne treatment with antibiotics.[3]
Fungal
- Tinea barbae is similar to barber's itch, but the infection is caused by the fungus T. rubrum.
- Malassezia folliculitis, formerly known as Pityrosporum folliculitis, is caused by yeasts (fungi) of the genus Malassezia
Viral
- Herpetic folliculitis may occur when herpes simplex virus infection spreads to nearby hair follicles - mostly around the mouth.
Non-infectious
- Pseudofolliculitis barbae is a disorder occurring when hair curves back into the skin and causes inflammation.
- Eosinophilic folliculitis may appear in persons with impaired immune systems.
- Folliculitis decalvans or tufted folliculitis usually affects the scalp. Several hairs arise from the same hair follicle. Scarring and permanent hair loss may follow. The cause is unknown.
- Reaction to Demodex mite infestation may occasionally be misdiagnosed as folliculitis.
- Folliculitis keloidalis scarring on the nape of the neck. Most common among males with curly hair.
- Oil folliculitis is inflammation of hair follicles due to exposure to various oils and typically occurs on forearms or thighs. It is common in refinery workers, road workers, mechanics, and sheep shearers. Even makeup may cause it.
- Malignancy may also be represented by recalcitrant cases.[4]
Treatment
- Topical antiseptic treatment is adequate for most cases
- Topical antibiotics, such as mupirocin or Neomycin/polymyxin B/bacitracin ointment may be prescribed. Oral antibiotics may also be used. Could need probiotic treatment.
- Some patients may benefit from systemic narrow-spectrum penicillinase-resistant penicillins (such as dicloxacillin in US, or flucloxacillin in UK)
- Fungal folliculitis can worsen with antibiotics and may require an oral antifungal such as Fluconazole. Topical antifungals such as Econazole Nitrate may also be effective.
Folliculitis may recur even after symptoms have gone away.
See also
- Ingrown hair
- Boil
References
- ^ "NHS Direct".
- ^ MedlinePlus Encyclopedia Hot tub folliculitis
- ^ "Severe Acne: 4 types". American Academy of Dermatology. Archived from the original on December 15, 2010. Retrieved December 15, 2010.
- ^ Folliculitis, follicular mucinosis, and papular mucinosis as a presentation of chronic myelomonocytic leukemia. Rashid R, Hymes S. Dermatol Online J. 2009 May 15;15(5):16.
External links
| Wikimedia Commons has media related to Folliculitis. |
- Links to folliculitis pictures (Hardin MD/Univ of Iowa)
- Medical Noteblog
- Malassezia (Pityrosporum) Folliculitis
Diseases of the skin and appendages by morphology
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Disorders of skin appendages (L60–L75, 703–706)
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Inflammation
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UpToDate Contents
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- 1. 感染性毛包炎 infectious folliculitis
- 2. 膿疱性皮膚病変を有する患者へのアプローチ approach to the patient with pustular skin lesions
- 3. 禿髪性毛嚢炎 folliculitis decalvans
- 4. 頭皮の発疹を有する患者へのアプローチ approach to the patient with a scalp disorder
- 5. 頭部白癬 tinea capitis
English Journal
- Eosinophilic Pustular Folliculitis Associated with Cutaneous Angiosarcoma.
- Jiang YY1, Zeng YP1, Jin HZ1.
- Chinese medical journal.Chin Med J (Engl).2018 Jan 5;131(1):115-116. doi: 10.4103/0366-6999.221284.
- PMID 29271395
- Systemic photodynamic therapy in folliculitis decalvans.
- Collier NJ1, Allan D1,2, Diaz Pesantes F3, Sheridan L2, Allan E2.
- Clinical and experimental dermatology.Clin Exp Dermatol.2018 Jan;43(1):46-49. doi: 10.1111/ced.13238. Epub 2017 Sep 22.
- PMID 28940572
- [A case of chronic progressive neuro-Behçet disease with extensive cerebral atrophy and elevated CSF IL-6 activity treated with infliximab].
- Hamada K1, Takei R1, Sakiyama Y1, Moriyama H2, Hashiguchi A1, Takashima H1.
- Rinsho shinkeigaku = Clinical neurology.Rinsho Shinkeigaku.2017 Dec 22. doi: 10.5692/clinicalneurol.cn-001086. [Epub ahead of print]
- PMID 29269695
Japanese Journal
- 症例 ミノサイクリン塩酸塩内服が有効であった穿孔性毛包炎の1例
- 皮膚科の臨床 58(4), 599-602, 2016-04
- NAID 40020820860
- 皮膚真菌症治療における経口抗真菌薬の活用
- Medical Mycology Journal 57(2), J71-J75, 2016
- NAID 130005155857
- 難治性口内炎を契機に発見されたIgA天疱瘡の1例
- 日本口腔外科学会雑誌 62(3), 115-119, 2016
- NAID 130005153061
Related Links
- 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 ...
- What is folliculitis? Folliculitis is an infection in the hair follicles. Each hair on your body grows out of a tiny pouch called a follicle. You can have folliculitis on any part of your body that has hair. But it is most common on the face ...
Related Pictures
★リンクテーブル★
| リンク元 | 「毛嚢炎」「毛胞炎」「毛包炎」 |
| 拡張検索 | 「superficial pustular perifolliculitis」 |
「毛嚢炎」
- 英
- folliculitis
- 関
- 毛包炎、毛胞炎
「毛胞炎」
- 英
- folliculitis
- 関
- 毛包炎、毛嚢炎
「毛包炎」
- 英
- folliculitis
- 同
- 毛嚢炎
- 関