How can perianal itching occur? The causes of perianal itching are numerous. Although perianal itching is a localized symptom, its causes are not limited to the local area, as many systemic diseases can also cause perianal itching.
Systemic diseases or skin conditions that can lead to perianal itching include diabetes, hyperthyroidism, lymphoma, uremia, liver and gallbladder diseases, neurological disorders, drug allergies (such as the use of antibiotics), eczema, candida infections, jock itch, psoriasis, and peeling caused by diarrhea, etc.
Local factors that cause perianal itching are more common. Some are directly caused by anal skin diseases, such as anal eczema, neurodermatitis, contact dermatitis, obscure medical conditions, folliculitis, and perianal dermatitis; others are caused by secretions from anal diseases, such as internal hemorrhoids, external hemorrhoids, anal fistulas, mixed hemorrhoids, anal papillitis, anal cryptitis, and rectitis, etc. Additionally, intestinal parasitic diseases most commonly causing itching are pinworms, with the itching mostly occurring at night. There are also cases where obesity leads to excessive sweating, poor hygiene habits, or overemphasis on anal hygiene, which washes away the mucosa around the anus, leading to dryness in the area. Excessive vaginal discharge, especially alkaline discharge, can also cause this.
In summary, for the treatment of perianal itching symptoms, it's best to identify the primary cause or trigger and treat accordingly to achieve good results. For stubborn skin itching conditions of unknown origin, if conservative drug treatments are ineffective, a procedure to remove the nerve endings responsible for perianal itching may be considered.
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