Symptoms and Warning Signs: What to Watch For

Living with Majeed syndrome means learning to navigate a landscape of flares and remissions. Because this condition is autoinflammatory, symptoms are caused by the body’s own immune system overreacting, rather than an external infection ^[1]. These symptoms often appear in a cycle: a child may seem healthy for weeks or months, only to experience a sudden “flare-up” of pain, fever, and fatigue ^[2][3].

The Three Primary Symptoms

Most children with Majeed syndrome experience a “triad” of symptoms that typically begin before the age of three ^[2]. However, the severity of these symptoms can vary widely from one child to another.

1. Bone Pain and Swelling (CRMO)

The hallmark of the disease is Chronic Recurrent Multifocal Osteomyelitis (CRMO). This is “sterile” bone inflammation, meaning the bone looks and feels infected, but no bacteria are present ^[4].

• What it feels like: Deep bone pain, tenderness to the touch, and sometimes visible swelling or redness over a bone ^[5][6].
• Where it happens: While it can affect any bone, it often occurs in the long bones of the legs or arms, the collarbone, or the spine ^[7].
• Variability: Some children have mild, intermittent aching, while others experience severe pain that limits their ability to walk or move ^[6].

2. Anemia and Fatigue (CDA)

Congenital Dyserythropoietic Anemia (CDA) means the body struggles to produce healthy red blood cells ^[5].

• Signs: Look for paleness (especially in the lips or fingernail beds), shortness of breath during play, and profound fatigue ^[1].
• Variability: Anemia ranges from mild (the child is slightly more tired than peers) to severe (requiring blood transfusions) ^[2]. In rare cases, a child may also have a low count of infection-fighting white blood cells, known as neutropenia ^[3].

3. Inflammatory Skin Rashes

Skin issues are common but do not happen to every child with Majeed syndrome ^[1].

• Sweet Syndrome: This causes painful, red, or plum-colored bumps or plaques on the skin, often appearing alongside a fever ^[1].
• Erythema Nodosum: These are painful, bruise-like lumps that usually appear on the shins ^[8].

Growth and Development

When the body is constantly fighting internal inflammation, it uses up energy that would normally go toward growing. This can lead to failure to thrive, where a child does not gain weight or height at the expected rate ^[1][9]. Some children may also experience delays in physical milestones, like walking, due to chronic pain or muscle weakness ^[6].

Creating a Written Action Plan

Because Majeed syndrome can mimic serious infections, and because treatments for the condition often suppress the immune system, it is vital to have a clinician-approved written action plan. Ask your rheumatologist to provide a one-page document listing your child’s individualized temperature thresholds, whom to call after hours, when to go to the emergency department, and specific medication instructions.

Never stop, start, or hold a biologic medication without direction from your prescribing team or an emergency clinician.

When to Seek Urgent or Emergency Care

Do not assume that every fever or pain is “just a flare.” Infections can coexist with or trigger flares and must always be evaluated, especially if your child is on biologic therapy ^[3]. Seek immediate medical attention if you observe:

• Signs of Serious Infection: High or uncontrolled fever accompanied by confusion, stiff neck, or extreme lethargy, as biologic drugs can mask standard signs of infection ^[3].
• Severe Anemia Symptoms: Fainting, extreme difficulty breathing, or marked, sudden paleness.
• Signs of a Vertebral Fracture: Bone inflammation can weaken the spine. Go to the ER for sudden back pain, a new refusal to bear weight, sudden weakness in the legs or arms, numbness (“pins and needles”), or loss of bowel/bladder control in a previously toilet-trained child ^[10][11].
• Severe Allergic Reaction: If your child develops hives, difficulty breathing, or facial swelling after a medication dose, seek emergency care immediately.