Pemphigus - Symptoms, Causes & Treatment
By ScanSkinAI Editorial Team✓ Reviewed for medical safetyLast updated June 2026
A group of rare autoimmune blistering diseases where antibodies attack the skin, causing painful blisters and sores on skin and mucous membranes.
Concerned this might be pemphigus? Scan it with our AI skin checker for instant analysis, or use our AI mole checker for pigmented lesions. Browse all 80+ skin conditions in our directory.
Quick Answer
Pemphigus is a group of rare autoimmune diseases that cause painful, fragile blisters on the skin and mucous membranes, such as the inside of the mouth, throat, or genitals. It occurs when your immune system mistakenly produces antibodies that attack healthy skin cells. Because the blisters break very easily, they often leave raw, oozing sores that are slow to heal. Pemphigus is a serious condition requiring specialist medical treatment, typically involving immunosuppressants or corticosteroids to manage outbreaks. Early diagnosis is vital for effective management.
Symptoms
- Fragile blisters that break easily
- Painful mouth sores
- Erosions that don't heal
- May affect eyes, nose, throat, genitals
- Raw, oozing areas
Causes & Risk Factors
- Autoimmune antibodies against desmoglein proteins
- May be triggered by medications
- Rarely associated with tumors
Treatment & Management
- Corticosteroids
- Immunosuppressants
- Rituximab
- Wound care
- Nutritional support
- Requires specialist care
When to See a Doctor
If you develop painful blisters that break easily, especially with mouth sores
Frequently Asked Questions
What causes pemphigus to develop?
Pemphigus is an autoimmune condition. This means your immune system mistakenly creates antibodies that attack the proteins holding your skin cells together, specifically targeting desmoglein proteins. When these proteins are damaged, fluid collects between the skin layers, forming fragile blisters. It is not contagious, and while the exact trigger is often unknown, some cases are linked to certain medications or, very rarely, to an underlying tumour.
What are the first signs of pemphigus?
The most common early sign is painful blisters in the mouth or throat that rupture quickly and form open sores. Because they break so easily, you might not even notice the blister itself, only the raw erosion left behind. Later, these fragile blisters may appear on the face, chest, back, or other mucous membranes like the nose and genitals. The affected areas are typically painful rather than itchy.
How is pemphigus different from other blistering conditions?
Pemphigus blisters are extremely fragile and break very easily, often leaving painful, raw sores, especially inside the mouth. In contrast, conditions like bullous pemphigoid typically produce firm, tight blisters that do not easily burst and are often very itchy. Because pemphigus sores are open and oozing, they carry a high risk of infection. A dermatologist will usually perform a biopsy to confirm exactly which blistering disease you have.
How is pemphigus treated?
Treatment requires specialist medical care to suppress the overactive immune system. Doctors often prescribe high doses of corticosteroids to bring the blisters under control quickly. Long-term management may involve immunosuppressive drugs or biologic therapies like rituximab to reduce antibody production. Extensive wound care and nutritional support are also crucial, particularly if mouth sores make eating and drinking difficult.
Can pemphigus be completely cured?
Pemphigus is a chronic disease, meaning there is currently no absolute cure. However, with modern treatments, the condition can be highly manageable. Many patients achieve long periods of remission where they experience no symptoms at all. You will likely need ongoing monitoring by a dermatologist or specialist to adjust your medications and manage any side effects from long-term immunosuppressant therapies.
Is pemphigus contagious or caused by an infection?
No, pemphigus is not contagious. You cannot catch it from someone else, nor can you pass it on through physical contact, sharing utensils, or airborne droplets. It is strictly an autoimmune disorder where your own immune system attacks your skin cells. However, because the disease causes open, raw sores, the affected areas are highly vulnerable to secondary bacterial or viral infections.
When should I see a doctor for unexplained blisters?
You should seek medical advice promptly if you develop unexplained, painful blisters that break easily, particularly if you have persistent sores inside your mouth, nose, or throat. Open, oozing erosions that do not heal over a couple of weeks also require professional attention. Because pemphigus can progress quickly and lead to severe complications like dehydration and infection, early specialist diagnosis is essential.
How can ScanSkinAI help with pemphigus?
ScanSkinAI can be used as a helpful screening aid to track persistent sores, erosions, or fragile blisters on your skin. By tracking changes in your skin over time, the app helps you decide when to seek professional care. However, ScanSkinAI cannot diagnose pemphigus or any other condition. A definitive diagnosis requires a clinical evaluation and skin biopsy by a dermatologist or healthcare provider.
Related Conditions
Medical References
Information on this page is sourced from and verified against reputable medical resources:
Concerned About Your Skin?
Upload a photo and get instant AI-powered analysis across 80+ skin conditions. Track your condition over time with photo timelines, or use our dedicated AI mole checker for moles and pigmented lesions.
Medical Disclaimer: This information is for educational purposes only and is not intended as medical advice. The content on this page should not be used to diagnose or treat any health problem. Always consult with a qualified healthcare professional for proper medical evaluation, diagnosis, and treatment of your condition.