CONFIRM THE STORY, EXCLUDE SEIZURE AND LONG QT (RECOGNITION & REFERRAL)
Breath-Holding Spells - StatPearls (NCBI Bookshelf NBK539782) - https://www.ncbi.nlm.nih.gov/books/NBK539782/
The point here is to stop a dangerous mislabel. A breath-holding spell is diagnosed on a history with a clear trigger and a clean recovery; the two things it is mistaken for - an epileptic seizure and a cardiac arrhythmia such as long QT - are both potentially fatal and neither is excluded by the child looking well in the clinic. The article's own instruction is to rule them out, and an ECG is the cheap half of that.
- WHAT A TRUE SPELL IS - a frequent and harmless event, seen in as many as 5% of children, and it comes in two forms. In the cyanotic kind, anger or frustration sets it off: the child holds their breath and the face goes blue or purple. In the pallid kind, a sudden fright comes first and the breathing then stops.
- THE HISTORY IS THE DIAGNOSIS, AND IT HAS TO BE CLEAN - the story must name an unmistakable emotional trigger, and then a spell of one type or the other, cyanotic or pallid. Decisively: there must be NO aura beforehand, and the child must NOT have any postictal features once they come round. No trigger, or a drowsy confused child afterwards, means this is not a breath-holding spell.
- IT CAN LOOK LIKE A FIT AND STILL BE A SPELL - a spell can knock a child out cold and can tip over into a convulsion. A jerk at the end of a spell does not by itself make it epilepsy. Telling a seizure disorder apart from these spells is genuinely difficult, so an electroencephalogram (EEG) is sometimes done - but absent a red flag, an EEG is generally NOT advised.
- DO THE ECG - THIS IS THE LINE THAT KILLS IF IT IS SKIPPED - an ECG is a cornerstone of the work-up, there to exclude a cardiac cause that would matter. The article names long QT syndrome among the conditions to rule out, and asks that the other causes of a faint or a fit be excluded too - epilepsy and the arrhythmias. A pallid spell, an episode with no crying, one during exercise or swimming, or a family history of sudden death or deafness makes the ECG urgent.
- THE CHILD MUST BE NORMAL BETWEEN EPISODES - the children who get these spells have a neurological examination that is normal and are hitting their milestones for their age; the rest of the examination should turn up nothing worrying either. Developmental regression or an abnormal neurological examination is a different diagnosis.
- ANYTHING THAT DOES NOT FIT GETS REFERRED, NOT WATCHED - where any piece of the assessment sits at odds with that story, it earns a work-up without delay and a referral onward: paediatric cardiology, paediatric neurology or genetics, as the case demands.
- CHECK THE IRON - send iron studies, because iron deficiency runs high in this group of children. This is the one test that also changes treatment, and iron deficiency is common in Egyptian toddlers.
- THE DIFFERENTIAL WORTH HOLDING IN MIND - the article lists arrhythmia, epilepsy, sepsis and nonaccidental trauma among the conditions to consider, and adds stridor of the larynx present from birth, and a congenital heart lesion that depends on a patent ductus. An episode described by a carer but never by the parent, or bruising that does not fit, deserves the same suspicion as any other unexplained collapse.
- WHAT TO TELL THE PARENTS, AND WHAT NOT TO DO - nothing lasting comes of these spells, so tell the parents to make as little of an episode as they can, or the child learns a behaviour out of it. Reassurance, plus that behavioural handling, is the standard treatment. Put NOTHING in the child's mouth, and do NOT shake, slap or splash the child.
- THE PROGNOSIS THEY CAME FOR - the spells do no damage and they do NOT injure the brain. Where neurological development is normal already, it stays normal. In most children the episodes have stopped by the age of 6.
- WHY NO ANTI-EPILEPTIC IS PRESCRIBED HERE - the article reports randomised trials in which piracetam at 40 mg/kg/d cut the spells markedly against placebo, and suggests levetiracetam may do better still. It then qualifies the whole class at once: because the condition settles by itself, the good and the harm of any treatment have to be balanced with care. That is a specialist decision and no such row is offered here.