The main cause of itchy bum, also known as pruritus ani, can be attributed to a variety of factors. These can range from a simple skin irritation or sensitivity, to a more serious underlying condition such as a fungal infection, a skin disorder, or an autoimmune disorder.
Skin irritations are the most common cause of itchy bum, and can be caused by a variety of things such as contact with irritating materials (e.g. clothing, toilet paper, perfumes, soaps, etc.), too much moisture in the area, or exposure to allergens (e.g. dust, pollen, pet dander, etc.). These irritations can cause the skin to become inflamed and itchy.
Fungal infections, such as ringworm or jock itch, can also cause itchy bum. These infections can be very uncomfortable and itchy, and can also be contagious.
Certain skin disorders, such as psoriasis or eczema, can also cause itchy bum. These disorders can cause the skin to become red, inflamed, and itchy.
Autoimmune disorders, such as Crohn’s disease, can also cause itchy bum. These disorders can cause the body to produce too many antibodies, which can cause inflammation, itching, and other symptoms.
Ultimately, the main cause of itchy bum can vary from person to person and depend on the underlying cause. It is important to visit a doctor if the symptoms persist or worsen in order to get a proper diagnosis.