Types of lupus explained: systemic, cutaneous, drug-induced and neonatal lupus

1. Systemic lupus

Systemic lupus can affect several organs and body systems. This is why it is described as a ‘systemic’ condition.

It can affect:

• The joints;
• The skin;
• The kidneys;
• The heart;
• The lungs;
• The blood;
• The nervous system in some cases.

Symptoms vary considerably from person to person. Lupus often follows a pattern of flare-ups, when symptoms worsen, alternating with periods when the condition is less active. Some people may have ongoing symptoms.

Some people develop kidney inflammation called lupus nephritis. This requires particular attention to kidney function and regular monitoring.

Key takeaway

Systemic lupus is not limited to the skin. It can affect different organs and requires regular medical follow-up.

2. Cutaneous lupus

Cutaneous lupus mainly affects the skin. It can cause different types of rashes and skin lesions, particularly in areas exposed to sunlight.

Some forms cause redness, raised patches or persistent lesions. Sensitivity to sunlight, known as photosensitivity, is common.

There are several forms of cutaneous lupus, including acute, subacute and chronic forms. Discoid lupus is a type of chronic cutaneous lupus.

Cutaneous lupus may remain limited to the skin, but it can also occur alongside systemic lupus. Having cutaneous lupus does not automatically mean that someone has systemic lupus.

3. Drug-induced lupus

Certain medicines can cause lupus-like symptoms in some people.

This is known as drug-induced lupus.

Symptoms generally improve after the medicine responsible is stopped. However, always speak with your healthcare professional before stopping a prescribed medicine.

Drug-induced lupus differs from typical systemic lupus in its connection to medicine use and how it develops and resolves.

4. Neonatal lupus

Neonatal lupus is a rare condition that affects newborn babies.

It does not mean that a baby has inherited their mother’s systemic lupus. It occurs when certain maternal antibodies cross the placenta during pregnancy. The mother may carry these antibodies even without having a lupus diagnosis.

Neonatal lupus can cause a skin rash and, less commonly, a serious heart conduction problem called congenital heart block. Skin symptoms usually resolve as maternal antibodies clear from the baby’s body, but heart block can be permanent.

When these antibodies or other risk factors are identified, the healthcare team may recommend specialist monitoring during pregnancy.

Neonatal lupus is therefore different from systemic lupus in adults.

Systemic or cutaneous lupus: what is the difference?

The main difference is which parts of the body are affected.

These forms should not be confused, as their diagnosis and care may differ. However, some can overlap, particularly cutaneous and systemic lupus.

How do doctors identify the type of lupus?

Diagnosis involves considering clinical findings and laboratory test results together.

The doctor considers:

• Symptoms;
• Any skin rashes or lesions;
• Blood test results;
• The presence of certain autoantibodies;
• Any organ involvement;
• Current and previous medicines;
• How symptoms have changed over time.

Your GP may arrange initial tests and refer you for specialist assessment. For systemic lupus, a rheumatologist is usually involved in ongoing care. A dermatologist or nephrologist may also be involved, depending on whether the skin or kidneys are affected.

Why is identifying the type of lupus important?

Lupus does not affect everyone in the same way. Care depends on factors such as the organs involved and the severity of the condition.

For systemic lupus, follow-up helps detect possible organ involvement and assess how well treatment is working and whether it is causing side effects. Regular blood and urine tests may be part of this monitoring.

The different types of lupus: what to remember

The term ‘lupus’ covers several different conditions.

Systemic lupus can affect various organs and may cause flare-ups. Cutaneous lupus mainly affects the skin. Drug-induced lupus develops in response to certain medicines. Neonatal lupus is a distinct condition affecting newborns.

Identifying the type of lupus helps the healthcare team tailor monitoring and care to each person.

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