A constant itch in one nostril.no hair on inner walls of nostrils but instead red skin.no bleeding.no stuffiness.never have experienced allergies.help?

Please see: Please see your dermatologist for evaluation and to discuss treatment options. You may also need to see ENT doctor.

Doubt allergy: It would be unusual to suffer from nasal allergy and to have strictly one-sided symptoms. Without examining you and looking inside the nose (with an appropriate instrument), it would be inadvisable to suggest a diagnosis. You should see a physician. As a temporary (until you see a physician) measure you could try a lubricating nasal spray such as nasogel or rhinaris.