肛門掻痒症
WordNet
- an intense itching sensation that can have various causes (as by allergies or infection or lymphoma or jaundice etc.)
- black tropical American cuckoo
PrepTutorEJDIC
- (次にくる語の発音が母音で始まるときに用いる) / (子音[h]で始まり第1音節に強勢のない語の場合はanを用いることがある.ただし,この場合は[h]を発音しない)
- アニス酒(aniseedで味をつける)
Wikipedia preview
出典(authority):フリー百科事典『ウィキペディア（Wikipedia）』「2013/05/11 16:53:00」(JST)
[Wiki en表示]
| Pruritus ani |
| Classification and external resources |
| ICD-10 |
L29.0 |
| ICD-9 |
698.0 |
| DiseasesDB |
30154 |
| MeSH |
D011538 |
Pruritus ani (also known as anusitis) is the irritation of the skin at the exit of the rectum, known as the anus, causing the desire to scratch.[1] The intensity of anal itching increases from moisture,[citation needed] pressure, and rubbing caused by clothing and sitting. At worst, anal itching causes intolerable discomfort that often is accompanied by burning and soreness. It is estimated that up to 5% of the population of the United States experiences this type of discomfort daily.
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Contents
- 1 Causes
- 2 Treatment
- 3 See also
- 4 References
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Causes [edit]
The irritation can be caused by intestinal parasites, anal perspiration, frequent liquid stools, diarrhea, residual stool deposits, or the escape of small amounts of stool as a result of incontinence or flatulence. Another cause is yeast infection or Candidiasis. Some diseases increase the possibility of yeast infections, such as diabetes mellitus or HIV infection. Treatment with antibiotics can bring about a disturbance of the natural balance of intestinal flora, and lead to perianal thrush, a yeast infection, affecting the anus. Psoriasis also can be present in the anal area and cause irritation. Abnormal passageways (fistulas) from the small intestine or colon to the skin surrounding the anus can form as a result of disease (such as Crohn's disease), acting as channels which may allow leakage of irritating fluids to the anal area. Other problems that can contribute to anal itching include pinworms, hemorrhoids, tears of the anal skin near the mucocutaneous junction (fissures), and skin tags (abnormal local growth of anal skin). Anal itching is conjectured to be possibly caused by irritating chemicals in foods consumed, but no clinical evidence based on scientific inquiry has been asserted to demonstrate this.
Some authorities describe “psychogenic pruritus” or "functional itch disorder" [1], where psychological factors may contribute to awareness of itching.
The helminth (worm) Enterobius vermicularis (pinworm, or threadworm) can cause severe pruritus ani from migration of gravid females (from the bowel), leading to haemorrhage and eczema.
Treatment [edit]
For pruritus ani of unknown cause treatment typically begins with measures to reduce irritation and trauma to the perianal area.[2] Stool softeners can help prevent constipation.[2] If this is not effective topical steroids or injected methylene blue may be tried.[2] If the itchiness is secondary to another condition such as infection or psoriasis these are typically treated.[2]
See also [edit]
- Pruritus scroti
- Pruritus vulvae
- Perianal candidiasis
References [edit]
- ^ James, William; Berger, Timothy; Elston, Dirk (2005). Andrews' Diseases of the Skin: Clinical Dermatology. (10th ed.). Saunders. ISBN 0-7216-2921-0.
- ^ a b c d Markell, KW; Billingham, RP (2010 Feb). "Pruritus ani: etiology and management.". The Surgical clinics of North America 90 (1): 125–35, Table of Contents. PMID 20109637.
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Dermatitis and eczema (L20–L30, 690–693,698)
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| Atopic dermatitis |
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| Seborrheic dermatitis |
- Pityriasis simplex capillitii
- Cradle cap
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Contact dermatitis
(allergic, irritant) |
- plants: Urushiol-induced contact dermatitis
- African blackwood dermatitis
- Tulip fingers
- other: Abietic acid dermatitis
- Diaper rash
- Airbag dermatitis
- Baboon syndrome
- Contact stomatitis
- Protein contact dermatitis
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| Eczema |
- Autoimmune estrogen dermatitis
- Autoimmune progesterone dermatitis
- Breast eczema
- Ear eczema
- Eyelid dermatitis
- Hand eczema
- Chronic vesiculobullous hand eczema
- Hyperkeratotic hand dermatitis
- Autosensitization dermatitis/Id reaction
- Candidid
- Dermatophytid
- Molluscum dermatitis
- Circumostomy eczema
- Dyshidrosis
- Juvenile plantar dermatosis
- Nummular eczema
- Nutritional deficiency eczema
- Sulzberger–Garbe syndrome
- Xerotic eczema
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Pruritus/Itch/
Prurigo |
- Lichen simplex chronicus/Prurigo nodularis
- by location: Pruritus ani
- Pruritus scroti
- Pruritus vulvae
- Scalp pruritus
- Drug-induced pruritus
- Hydroxyethyl starch-induced pruritus
- Senile pruritus
- Aquagenic pruritus
- Adult blaschkitis
- due to liver disease
- Biliary pruritus
- Cholestatic pruritus
- Prion pruritus
- Prurigo pigmentosa
- Prurigo simplex
- Puncta pruritica
- Uremic pruritus
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| Other/ungrouped |
- substances taken internally: Bromoderma
- Fixed drug reaction
- Nummular dermatitis
- Pityriasis alba
- Papuloerythroderma of Ofuji
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noco (i/b/d/q/u/r/p/m/k/v/f)/cong/tumr (n/e/d), sysi/epon
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proc, drug (D2/3/4/5/8/11)
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UpToDate Contents
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English Journal
- Patch testing is clinically important for patients with peri-anal dermatoses and pruritus ani.
- Abu-Asi MJ1, White IR1, McFadden JP1, White JM1.
- Contact dermatitis.Contact Dermatitis.2016 May;74(5):298-300. doi: 10.1111/cod.12514.
- PMID 27040873
- Anorectal Complaints in the Emergency Department.
- Tupe CL1, Pham TV2.
- Emergency medicine clinics of North America.Emerg Med Clin North Am.2016 May;34(2):251-70. doi: 10.1016/j.emc.2015.12.013. Epub 2016 Mar 23.
- Patients commonly present to the emergency department with anorectal complaints. Most of these complaints are benign and can be managed conservatively; however, there are a few anorectal emergencies that clinicians must be aware of in order to prevent further complications. The history and physical
- PMID 27133243
- Ansari P1.
- Clinics in colon and rectal surgery.Clin Colon Rectal Surg.2016 Mar;29(1):38-42. doi: 10.1055/s-0035-1570391.
- Pruritus ani is a common condition with many different potential causes. Because of this, it can be difficult to treat. It is important to identify and eliminate any inciting factors, which are often unintentional consequences of the patient's attempts to alleviate symptoms. If no reversible cause i
- PMID 26929750
Japanese Journal
- 肛門周囲にPagetoid spreadを呈した肛門管低分化腺癌の1例
- 生澤 史江,三浦 康,柴田 近,小川 仁,石田 和之,安藤 敏典,小山 淳,福島 浩平,佐々木 巖
- 日本消化器外科学会雑誌 43(6), 678-684, 2010-06-01
- 症例は53歳男性で,肛門周囲の掻痒感と発疹を主訴に近医を受診し,皮膚生検でPaget病の診断となり当院紹介となった.肛門周囲皮膚および肛門管腫瘍の生検を施行し,肛門管癌のPagetoid spreadの診断にて腹会陰式直腸切断術を施行した.病理組織学的診断では肛門管より印環細胞を伴った低分化腺癌細胞が肛門皮膚上皮下へ進展し,免疫染色検査でCEA(+),CK20(+),CK7(-),GCDFP-15 …
- NAID 110007656702
- 肛門掻痒症の診断・治療のコツと実際 (特集 肛門疾患診断・治療のコツと実際) -- (その他の肛門疾患)
- Steroid Ointment Tapering Treatment for Pruritus Ani
- 佐々木 みのり,佐々木 巖,増田 芳夫
- 日本大腸肛門病学会雑誌 58(6), 303-311, 2005
- … Pruritus ani is a common symptom in anal diseases. … Ninety-four cases of pruritus ani were selected for study during 2003, and all 94 cases (100%) recovered successfully. … Skin lesions and itching of pruritus ani are mainly caused by the patient's scratching. …
- NAID 130000787684
Related Links
- Megan M. Cavanaugh, MD OVERVIEW Pruritis ani is a common medical problem affecting both men and women. This information was composed to help patients understand pruritis ani, its symptoms, evaluation, and treatment ...
- Our research has identified how to alleviate chronic anal itching and severe pruritus ani in people who have suffered for 10, 20 and even 30+ years. ... Our research identifies how to alleviate: Chronic Anal Itching and Severe Pruritus ...
★リンクテーブル★
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- ラ
- pruritus ani
- 同
- 肛門周囲そう痒症、肛門そう痒症
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- 英
- pruritus ani
- 関
- 肛門周囲そう痒症、肛門掻痒症
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- ラ
- pruritus ani
- 関
- 肛門掻痒症、肛門そう痒症
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乳児自己免疫性好中球減少症 autoimmune neutropenia of infancy
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- 関
- anal、anus