Some causes of sores in the nose include dry air or dust, inhalation of medication, and allergies to certain drugs, according to Dr. John Monheit. Medical conditions that can cause nose sores include a herpes simplex infection, folliculitis and Wegener's granulomatosis.
A herpes simplex infection can occur by coming into contact with an infected individual, such as through kissing or sharing the same utensils, notes Healthline. Symptoms of the infection include blistering sores, itching and flu like symptoms, such as fever, tiredness and swollen lymph nodes. The herpes simplex virus can spread to the eyes, causing additional symptoms including eye discharge and pain.
Folliculitis is an infection of the hair follicle and appears as small bumps that look like a rash or acne, explains Healthline. Other symptoms of the infection include bumps with pus, itching, redness and soreness. Folliculitis is caused by coming into contact with an infected person or by using an infected person's personal items. Other risk factors for contracting folliculitis include tight clothing, skin injuries and lack of hygiene.
Wegener's granulomatosis is an autoimmune disorder characterized by blood vessel inflammation that causes damage to the body's major organs, according to MedlinePlus. The cause of the disease is unknown, but it is more common in middle-aged adults that are of northern European descent. People with Wegener's granulomatosis typically experience frequent sinusitis, fever, fatigue and night sweats. Other common symptoms include chronic ear infections, upper respiratory symptoms and weight loss.