You have seen it before. The bath is ready, the shampoo is in your hand, and suddenly your grandchild is in full meltdown mode. You are not doing anything wrong. And neither are they.
There may be a real reason behind the tears, one that has nothing to do with stubbornness or bad behavior.
It Could Be a Sensory Issue
Between 5 and 17 percent of the general population experiences some form of sensory processing differences, according to The University of Kansas. Among children diagnosed with autism, that number jumps to 90 percent: a condition called sensory processing disorder, or SPD.
But you do not need a diagnosis to have a child who struggles with certain sensations. Hair washing, it turns out, is a surprisingly complex experience for a young nervous system.
Dr. Diane Knoll, OTD, OTR/L, an occupational therapist who specializes in mental health and sensory support, told Parade the meltdown is rarely about just one thing.
What Is Actually Happening in Their Body
Dr. Knoll explains that just getting undressed for a bath can be hard for children who are sensitive to temperature changes or the feeling of wet skin, especially on their face. Some children have a sensitive scalp, and those same kids often struggle with hair brushing too. Even the water pressure can feel painful to their nervous system, she says.
Then there is the head tipping. Leaning back to rinse hair affects the vestibular system, which is centered in the inner ear and controls balance and spatial awareness. In children with vestibular sensitivity, Dr. Knoll explains, tipping the head back can feel like a loss of control. The brain sends what she calls “false panic signals” that make the child feel genuinely unsafe.
Tipping the head back also cuts off visual grounding; the child loses their normal sense of where they are in space. If the bathroom light is bright, that backward tilt makes the light feel even more intense.
Dr. Knoll also points to something called the Moro reflex, a startle reflex triggered by a sudden backward movement of the head. It is typically integrated into the nervous system between four and six months of age. When it is not fully integrated, it can continue to cause significant stress as a child grows.
Add in the echoing acoustics of a bathroom and the smell of shampoo, and there is a real sensory load happening all at once.
Two Things That Can Actually Help
Dr. Knoll recommends what she calls a “before, during and after approach,” originally developed by an autistic occupational therapist. The idea is to prepare the nervous system before hair washing begins, use coping tools during the wash, and help the child calm down and recharge afterward.
In practice, that might look like this:
- Before: Do some “heavy work”, physical activity that helps regulate the nervous system
- During: Use tools like a shampoo visor, a no-rinse cap, or a partial wash cap, along with a calming fidget to hold
- After: Let the child rest with a weighted blanket or in a rocking swing
The second tip is just as important: give your grandchild a voice. Dr. Knoll says letting children make small choices helps them feel calm and in control. Let them pick between two shampoo scents. Let them choose a fidget to hold. Ask if they want the lights dimmed or a projector on.
When to Suggest an OT Evaluation
If bath-time struggles are just one part of a bigger picture, a child who also avoids playground equipment, has trouble on uneven surfaces, or melts down during other daily routines, it may be worth mentioning to the parents.
Dr. Knoll says sensory processing issues are rarely isolated. An occupational therapy evaluation can help families understand what is driving the behavior. She specifically recommends looking for what is called a neurodiversity-affirming occupational therapist: one who, as she puts it, respects a child’s sensory boundaries rather than trying to force compliance.
The goal, Dr. Knoll says, is to honor the child’s nervous system, help them understand their own internal cues, and build genuine coping skills without causing trauma.
That is something every grandparent can get behind.
