Symptoms, Seizure Types, and Red Flags

Recognizing the different ways EMAtS (Doose Syndrome) manifests is the first step in keeping your child safe and ensuring they receive the right level of care. Because this syndrome involves multiple types of seizures, your daily life may involve managing everything from “blink-and-you-miss-it” events to medical emergencies.

Basic Seizure First Aid

No matter the seizure type, basic first aid remains the same:

• Time the event: Look at a clock the moment the seizure begins.
• Clear hazards: Move hard or sharp objects out of the way.
• Protect the head: Place something soft under the child’s head if they are on the floor.
• Do not restrain: Never hold the child down or try to stop their movements.
• Nothing in the mouth: Never put fingers, spoons, or food in the mouth during a seizure or until they are fully alert.
• Recovery position: Once the jerking stops, roll the child onto their side to keep their airway clear.

The Hallmark: Myoclonic-Atonic Seizures

The most distinctive feature of EMAtS is the myoclonic-atonic seizure, often called a drop attack. These are reported in over 90% of children with the syndrome ^[1].

• The Look: A drop attack usually happens in two lightning-fast stages. First, there is a brief, sudden jerk (myoclonus), often involving the shoulders or arms. This is immediately followed by a total loss of muscle tone (atonia) ^[2][3].
• The Result: Your child may suddenly “collapse like a ragdoll.” This can look like a simple head nod, a sudden buckling of the knees, or a full fall to the floor ^[2][4]. Because there is no warning, these seizures carry a high risk of facial and head injuries.

Other Common Seizure Types

Beyond drop attacks, children with EMAtS often experience a spectrum of other generalized seizures:

• Atypical Absences: These look like staring spells where your child is “spaced out.” Unlike a “typical” absence, these often start and end gradually and may include subtle movements like eye blinking or slight slumped posture ^[5][6].
• Generalized Tonic-Clonic (GTC) Seizures: Formerly called “grand mal” seizures, these occur in 60% to 72% of children with EMAtS ^[7][8]. They involve a loss of consciousness, body stiffening (tonic phase), and rhythmic jerking (clonic phase) ^[6].
• Tonic-Vibratory Seizures: These are common in EMAtS (seen in ~73% of one cohort) and involve the body becoming stiff and vibrating or trembling slightly ^[1].

Nonconvulsive Status Epilepticus (NCSE): An Urgent Medical Problem

Approximately 21.7% of children with EMAtS will experience nonconvulsive status epilepticus (NCSE) ^[1]. This is a state where the brain is in a continuous or near-continuous seizure without the dramatic jerking of a typical convulsion.

Because it lacks obvious physical movements, NCSE can be difficult to spot, but it is an urgent medical problem that can cause injury to the brain if left untreated. You should suspect NCSE if you notice:

• “Brain Fog” or Lethargy: Your child appears unusually confused, lethargic, or unable to wake up normally ^[5].
• Fluctuating Awareness: They seem to drift in and out of responsiveness ^[5].
• Sudden Regression: A rapid loss of skills, like suddenly being unable to walk steadily or speak clearly, that lasts for a prolonged period ^[5][1].

If you suspect NCSE, follow your child’s Seizure Action Plan immediately and seek urgent medical evaluation. They will likely need an urgent EEG (electroencephalogram) to see if the brain is stuck in a seizure state ^[9].

When to Act: Red Flags and Emergencies

Navigating when to call emergency services versus when to call your neurologist is one of the most stressful parts of parenting a child with EMAtS. Always follow your child’s specific Seizure Action Plan, but use the following as a general guide:

Call Emergency Services (911) Immediately If:

• The 5-Minute Rule: A convulsive (tonic-clonic) seizure lasts longer than 5 minutes ^[10].
• Clustering Without Recovery: Your child has one seizure after another without waking up or returning to their “normal” self in between ^[11].
• Breathing Difficulty: Your child’s skin or lips turn blue (cyanosis), or they are struggling to breathe after the jerking stops ^[12][13].
• Injury: A “drop attack” results in a significant head injury, deep cut, or suspected broken bone ^[3].
• Water Incidents: Any seizure that occurs while the child is in a bathtub or pool.

Seek Urgent Medical Care (Call Your Neurologist) For:

• Suspicion of NCSE: Your child is in a prolonged state of confusion or “fogginess” or unable to wake up normally ^[5].
• Medication Side Effects: Do not stop medications abruptly, but seek urgent care for signs of severe reactions, such as blistering or peeling rashes, facial swelling, breathing difficulty, extreme lethargy, or signs of liver distress (yellowing of the skin/eyes, severe vomiting) ^[14].
• New Seizure Types or Increased Frequency: The number of seizures per day is noticeably higher than your child’s “usual” baseline or you see a new physical movement ^[15].