Prurigo Nodularis: Causes, Symptoms, and Treatment
Medically reviewed by Harsha Moole, MD, Internal Medicine. Last reviewed: October 23, 2026.
What kind of doctor treats Prurigo Nodularis?
A dermatologist, a doctor who treats skin conditions, usually diagnoses and treats prurigo nodularis. Your dermatologist may also send you to another doctor, because prurigo nodularis can go along with other diseases. A direct primary care or concierge doctor can be a first stop for an evaluation and can refer you to a specialist when needed.
What is prurigo nodularis?
Prurigo nodularis is an intensely itchy skin condition. Scratching causes hard, itchy bumps called nodules to appear on the skin.
It is not an autoimmune disease, which is a problem where the body mistakenly attacks itself.
Symptoms
The condition begins with itchy skin. You may have one or two small itchy areas, or the itch may be widespread. The itch can come in short, strong bursts or be there most of the time. After scratching or rubbing for a while, hard bumps appear. Common signs include:
- Itchy bumps on skin that is easy to scratch, such as the legs and arms.
- Bumps that may be red, pink, the color of your skin, or brownish black.
- Bumps that can break open or scab over.
- Scratching until the bumps bleed, or skin that feels too painful to touch.
Open, scratched skin may become infected. The itch can wake people up at night.
Causes and who gets it
Researchers are still studying what causes prurigo nodularis. Nerves in the skin become more sensitive and overreact. The immune system, which defends the body, also gets overly active. Both lead to inflammation, the body's response that harms healthy tissue.
About half of the people who develop it have or had eczema, a common skin condition that causes itchy, dry, and inflamed skin. It is more common in people who are 50 or older, usually between 51 and 65 years of age. It is also more common in people with some long-term diseases. These include diabetes, end-stage kidney disease (kidneys that have almost stopped working), hepatitis C (a virus that harms the liver), untreated HIV, lymphoma (a cancer of the immune system), anxiety, or depression. Still, anyone can develop this disease.
How doctors diagnose it
A dermatologist can often diagnose prurigo nodularis by looking closely at your skin for itchy bumps and patches. If you may have more than one skin condition, the doctor may scrape off a bit of skin or do a skin biopsy. For a biopsy, the doctor numbs the area. Then the doctor takes a small piece of skin to look at under a microscope.
You may need blood tests, because people with prurigo nodularis may have another disease, such as diabetes, hepatitis C, or untreated HIV. Prurigo nodularis may even be the first sign of another disease, such as lymphoma or untreated HIV. So dermatologists do a thorough exam, order tests, and sometimes refer patients to another doctor.
Treatment
At this time, prurigo nodularis can be treated but not cured. The goals are to relieve the itch, clear the bumps and patches, protect your sleep, and improve your quality of life. Treatment can take time to work. Your dermatologist will make a plan just for you. It may include one or more of these:
- Itch relief creams you can buy without a prescription, such as menthol, phenol, pramoxine, or capsaicin.
- A corticosteroid (a medicine that reduces inflammation) applied to the skin, or medical tape coated with a corticosteroid.
- Prescription skin medicines such as pimecrolimus, tacrolimus, or calcipotriol.
- Corticosteroid shots into a bump, or cryosurgery. Cryosurgery freezes bumps with a very cold substance such as liquid nitrogen.
- Phototherapy, also called light therapy, which uses a set amount of ultraviolet light.
- Medicines that work throughout the body, including dupilumab and nemolizumab. Both are FDA approved for adults who have prurigo nodularis, and both are given as injections.
- An antihistamine at bedtime, which may prevent itching so you can sleep.
- Methotrexate or cyclosporine pills, which are used less often today.
Counseling can help if the disease is taking an emotional toll. Do not try tanning beds, sunlamps, or sitting in the sun. If you get overheated or sunburned, you can have a flare-up.
When to see a doctor
See a dermatologist if you have itchy bumps on your skin that last for more than 2 weeks. Also tell your doctor if you have trouble using a medicine as directed or develop side effects such as irritated skin.
How a direct primary care or concierge doctor fits in
A direct primary care doctor charges a flat monthly fee instead of billing insurance, while a concierge doctor usually charges more and often works alongside insurance. Either kind of doctor can look at your skin, check for other health problems, and refer you to a dermatologist when needed. They can also help you keep up with long-term care.
Common questions
Is prurigo nodularis contagious?
No. You cannot catch prurigo nodularis or give it to someone else.
Is prurigo nodularis hereditary?
No. You cannot inherit genes for prurigo nodularis, so it does not pass from parents to children.
Can prurigo nodularis be cured?
Not at this time. Prurigo nodularis can be treated but not cured, and effective treatment can get rid of the itch and clear the skin.
Does scratching spread prurigo nodularis?
No. Scratching often causes more bumps to appear, but this is due to inflammation and does not spread the condition around your skin.
Can prurigo nodularis kill you?
No. This skin condition will not kill you, but it can greatly affect your life, for example by interrupting your sleep.
Sources
- American Academy of Dermatology - Prurigo nodularis: Diagnosis and treatment
- American Academy of Dermatology - Prurigo nodularis: Causes
- American Academy of Dermatology - Prurigo nodularis: FAQs
Medical Disclaimer
This content is for general educational and informational purposes only and is not medical advice. It is not a substitute for professional medical advice, diagnosis, or treatment, and reading it does not create a doctor-patient relationship. Always seek the advice of your physician or another qualified health provider with any questions about a medical condition, and never disregard or delay seeking professional advice because of something you read here. If you think you may have a medical emergency, call 911 (or your local emergency number) immediately.
