Hyposensitivity

Hyposensitivity, also known as Sensory under-responsitivity, refers to abnormally decreased sensitivity to sensory input.

Hyposensitivity is a symptom of sensory processing disorder, and is most commonly seen in autistic people. Due to masking, it is more prevalent in children and adolescents than adults. Those experiencing hyposensitivity have a harder time stimulating their senses than normally. They may not feel pain as easily as others, may be drawn to loud noises, be attracted to bright lights and colours, among other things.^[1]

Hyposensitivity can lead to an inactivated brain. This can give concentration problems, feeling drained or feckless, depression, procrastination and also hypersensitivities.

Auditory hyposensitivity symptoms include:

Little or no vocalizing/babbling as an infant.
Speaks in a loud voice and/or excessively.
Likes overly loud music, games, TV.
Difficulty with verbal cues such as name being called.
Difficulty remembering what was said, or needs instructions repeated.
Talks self through task, often out loud.
Appears oblivious to certain sounds.
Disorientation/confusion about where a sound is coming from.

Tactile hyposensitivity symptoms include:

Craves touch. Needs to touch everything and everyone.
Self-injurious behavior; pinching, biting, cutting, head-banging.
Has a high pain tolerance.
Often puts objects in their mouth.
Seeks out surfaces and textures that provide strong tactile feedback.
Often is not aware of being touched/bumped unless done with extreme force or sensitivity.
May not be aware that hands or face are dirty.

Olfactory hyposensitivity symptoms include:

Fails to notice or ignores toxic odors.
Enjoys smelling objects, toys, people.
May drink or eat things that are harmful/poisonous because they do not notice the noxious smell.

Taste hyposensitivity symptoms include:

May eat, chew on, or put inedible items in their mouth.
Prefers food with intense flavour - excessively spicy, sweet, sour, or salty.
Likes brushing teeth/vibrating toothbrushes, and/or trips to the dentist.^[2]
Enjoys more texturized foods like chips, crackers, or hard candy instead of soft foods like ice cream or soup.

Visual hyposensitivity symptoms include:

"Seeing double."
Fatigues easily while reading, writing, drawing, or playing video games.

Vestibular hyposensitivity symptoms include:

Hyperactivity.
Rocking back and forth or walking in circles while body rocking.
Can spin or swing for a long time without feeling dizzy or nauseated.
Trouble with balance.

Proprioceptive hyposensitivity symptoms include:

Unaware of body sensations. For example, not noticing hunger.
Limited spatial awareness. Difficulty knowing where the body is in space.
Bumping into objects and people, tendency to fall.
Weak grasp and frequently dropping things.
Leaning against people, furniture, or walls.

See also

References

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