Internal itchy occurs in the region of orifices. Orifices include any opening to the body, such as the nasal cavity, oral cavity or anus. Itching in nasal and oral cavities commonly involve allergies. However, infection may be a cause for an itchy throat. Hemorrhoids could cause anal itching.
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The nasal cavity or nasal fossa contains a space that stores air, according to the National Institutes of Health. Tissue and bone comprise the wall of the nasal cavity. A part of tissue has material capable of sensation. Several conditions may cause an itchy sensation. These conditions involve nasal tissue.
This internal itching sensation of the nasal passages has various potential causes. The root of itchiness may range from allergies to a tumor. Therefore, an itchy nasal cavity is not a clear determination of the disorder. Some disorders associated with nasal itching include basal cell carcinoma, psoriasis, asthma, hayfever and respiratory infection. Various tests help determine the diagnosis.
The Food Allergy and Anaphylaxis Network states that oral allergy syndrome may cause a scratchy or itchy sensation in the oral cavity / mouth. The onset of oral allergy syndrome occurs in young adults, teens and older children. When raw vegetables or fruits are consumed in people with hay fever, oral itchy begins. However, cooked or processed foods do not cause this symptom. Increased itching occurs with pollinated foods, such as pears, almonds, carrots, apples, tomatoes, cucumbers and bananas.
Scratchy or itchy throat is a symptom of the common cold, according to the National Institutes of Health. The itchy sensation is caused by irritation to the tissue of the pharynx or post-nasal drip. In addition, infection may cause a scratchy throat, such as strep throat. Antibiotics, such as amoxicillin, penicillin or azithromycin, may be used to treat strep throat.
Hemorrhoids commonly cause internal itching of the anus, according to the National Digestive Diseases Information Clearinghouse. Hemorrhoids result from a bulging of veins around the lower rectum and anus. Itching may be accompanied by irritation and pain. Hemorrhoid presents bloody stool.
Itching the anus aggravates the anal region, causing irritation to the orifice. Nevertheless, there are treatment options. Hemorrhoidal cream/suppository and warm baths provide a non-invasive method of treatment. However, hemorrhoids may require an invasive procedure or surgical removal. Rubberband ligation, sclerotherapy, infrared coagulation and hemorrhoidectormy are common procedures for hemorrhoid treatment.