Anal Itch.
Scared with that intractable anal itch!
Anal Itch or Pruritus ani is an extremely common and annoying symptom, which is associated with a wide range of mechanical, dermatological, infectious, systemic, and other conditions. Regardless of the etiology, the itch/scratch cycle becomes self-propagating and results in chronic pathologic changes that persist even if the initiating factor is removed.
Many patients believe pruritus ani is caused by poor hygiene and are overzealous in their attempt to clean the perianal area. Excessive cleaning, and particularly the use of brushes and caustic soaps, aggravate the sensitive tissues and exacerbate the condition. The perianal area can be highly sensitive to perfumes, soaps, clothes, fabrics, dietary intake, and superficial trauma.
Causes of anal itch
Infections- Parasites (Pinworm, scabies)
Bacterial infections (Group A, Beta-hemolytic Streptococus, staphylococcus aureus),Fungal infections (particularly candida)
Sexually transmitted diseases (condyloma, herpes, syphilis, gonorrhea)
Fecal Soiling
Encopresis,Incontinence (usually post anorectal and bowel surgeries)
Chronic diarrhea,Poor hygiene
Transient internal relaxation of the internal anal sphincter
Anatomic abnormalities (eg. prolapsed internal hemorrhoids, rectal prolapse)
Local irritation
Excessive use of soap and detergents
Use of local creams and medications
Dietary agents
milk
Anorectal diseases
Abscesses,Fissures,Fistulas
Dermatologic diseases
Psoriasis,Contact dermatitis,Atopic dermatitis
Hidradenitis suppurativa,Paget's disease
Systemic diseases
Diabetes mellitus,Hepatic diseases (hyperbilirubinemia)
Leukemia,Thyroid disorders
Post operative conditions
Psychological causes
Other
Chemotherapy