Rett Syndrome

Overview

Rett syndrome is a rare genetic disorder that affects how the brain develops. It mostly affects girls. Children with Rett syndrome usually develop normally for the first 6 to 18 months, then begin to lose skills they had learned, such as speaking, using their hands, and walking. It is not a disease you can catch, and in most cases it is not passed down from parents.

No, Rett syndrome is rare. It affects about 1 in every 10,000 to 15,000 girls born.

Rett syndrome almost always affects females. Males with the same gene change typically have more severe symptoms and are less likely to survive. The condition appears in children at a young age, usually between 6 and 18 months.

Symptoms

Common symptoms

• Loss of ability to use hands for purposeful tasks, often replaced by repetitive hand movements like wringing, tapping, or clapping
• Loss of speech and communication skills
• Breathing problems, such as fast breathing, breath-holding, or air swallowing
• Seizures (fits)
• Scoliosis (curved spine)
• Sleep disturbances
• Slowed growth and small head size

Symptoms in children

• Normal development in the first 6 to 18 months, then a loss of milestones
• Losing the ability to speak words or phrases that were already learned
• Losing purposeful hand skills and replacing them with repetitive movements
• Problems with walking, balance, or coordination
• Delayed reaching or crawling milestones

Symptoms in older adults

• Many symptoms continue into adulthood, including seizures and scoliosis
• People may develop muscle stiffness, joint stiffness, or Parkinson-like tremors
• Osteoporosis (weak bones) is common, which can lead to fractures
• Some women live into their 40s or 50s, but health problems may need careful management

Causes

Main causes

• A mutation (change) in the MECP2 gene on the X chromosome
• Usually the mutation happens randomly, with no family history

Risk factors

• Being female (because the gene change is on the X chromosome, and males often are more severely affected)
• In rare cases, a parent may carry a mild or silent mutation, which can increase the chance in a child
• No lifestyle, dietary, or environmental risk factors are known

When to see a doctor

See a doctor urgently if:

• First-time seizure or any seizure lasting more than 5 minutes
• Breathing problems that worry you, such as breath-holding turning blue
• Signs of a serious infection, such as high fever, pale or clammy skin, or severe drowsiness

Book a routine appointment if:

• If your child loses skills they had already gained, such as words, hand use, or walking
• If head growth slows down or stops
• If you notice unusual hand movements or breathing patterns
• If your child has difficulty feeding, poor weight gain, or constipation

Diagnosis

A doctor diagnoses Rett syndrome based on your child's developmental history and a physical examination. A diagnosis is usually confirmed with a genetic blood test that looks for a change in the MECP2 gene.

Tests that may be done

• Genetic test (blood sample) to check for MECP2 gene mutations
• Electroencephalogram (EEG) to look at brain activity, especially if seizures are present
• Hearing and vision tests to rule out other causes of developmental regression
• Imaging of the brain (MRI) in some cases to rule out other conditions

What to expect at your appointment

Diagnosis may take time because Rett syndrome shares features with other conditions. The specialist team will watch your child over several months and may do repeated assessments. You may meet a genetic counselor, who can explain the genetic result and what it means for your family. When a diagnosis is confirmed, a care plan will be put together with you and your child.

Treatment

There is no cure for Rett syndrome, but treatment focuses on managing symptoms, supporting development, and helping your child live as independently and comfortably as possible. A team of specialists—such as pediatricians, neurologists, physiotherapists, speech therapists, and occupational therapists—will work with you to create a personalized plan.

Self-care at home

• Follow a consistent daily routine to reduce anxiety
• Use physiotherapy exercises to maintain flexibility and strength
• Use hand splints or mobility aids as recommended by therapists
• Adapt mealtime strategies to prevent choking and improve feeding
• Keep a symptom diary to share with healthcare providers

Medical treatments

Medicines are sometimes used to help control seizures, breathing irregularities, sleep problems, or muscle stiffness. The choice of medicine depends on each person's symptoms and may change over time. Your doctor will explain the options, benefits, and possible side effects. Other treatments include feeding support (such as special diets or nutritional supplements) if eating is difficult, and breathing therapy or equipment to help with respiration if needed.

When is surgery considered?

Surgery may be considered if scoliosis curves severely and affects breathing or daily comfort. In some cases, a feeding tube may be placed in the stomach to ensure adequate nutrition if swallowing becomes unsafe.

Living with this condition

Daily life with Rett syndrome involves helping your child maintain skills, prevent complications, and enjoy meaningful activities. Communication can be done through eye gaze, gestures, or assistive devices. Many children and adults with Rett syndrome benefit from a predictable schedule, calm spaces, and positive interactions with family and friends.

Lifestyle tips

• Work closely with therapists to create an exercise and stretching routine
• Make the home safe and supportive, especially if balance or walking is affected
• Encourage social activities adapted to your child's abilities
• Plan for good sleep hygiene, such as a quiet bedtime routine
• Keep regular appointments with the care team

Diet and exercise

A well-balanced diet is important for overall health. Some people with Rett syndrome have feeding difficulties, poor weight gain, or constipation. Your team may suggest a high-calorie diet, soft foods, or supplements. Exercise should be gentle and enjoyable, such as swimming, assisted walking, or stretching, to maintain joint mobility and muscle strength.

Mental health and emotional wellbeing

Caring for someone with Rett syndrome can be emotionally demanding. Parents and siblings may experience stress, worry, or feelings of loss. It is very important to take care of your own mental health. Speak with your doctor if you feel overwhelmed, and do not hesitate to ask for respite care or counseling.

Prevention

Rett syndrome cannot be prevented, because the gene change is random and usually not inherited. For families who have a child with Rett syndrome and who wish to have another child, genetic counseling can discuss the risk and available options, but this does not change the occurrence of the condition.

Screening programmes

There is no routine newborn screening for Rett syndrome. Prenatal genetic testing is possible only if a parent is known to carry a MECP2 mutation or if a previous child has the condition. These tests are not routine and should be discussed with a genetic counselor.

Complications

If left untreated

• Untreated seizures may become more frequent or severe
• Poor nutrition and feeding problems can lead to growth failure
• Breathing abnormalities may cause low oxygen levels or chest infections
• Scoliosis may progress and interfere with breathing
• Trust issues or pressure sores may develop without proper positioning and care

Long-term outlook

While Rett syndrome is a lifelong condition, many people live well into adulthood. With good medical care, therapy, and family support, children with Rett syndrome can learn, communicate, form relationships, and enjoy life. The future is brighter today because of earlier diagnosis, better symptom management, and ongoing research.

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