Parents considering deodorant for kids or worried about their child’s smelly armpits may have cause for concern. There’s a massive difference between a child getting stinky by interacting with his or her environment, like playing in the mud, and biological body odor causes. If the latter happens too early, kids’ body odor could be a cause for concern.
Generally, body odors in children begin emerging when apocrine sweat glands — the ones found in the underarm — become activated. Unlike eccrine glands, which are active throughout the body from birth, apocrine-produced sweat contains substances like fat, which are in turn consumed and digested by skin-dwelling bacteria. Which is to say, kids BO is caused by bacterial poop, more or less.
Body odor, then, is normal from early puberty on. But the presence of body odor on children who aren’t yet at the typical age for puberty — 8 to 13 for girls, 9 to 14 for boys, generally — could signal that it’s time to get to a pediatrician.
“The abnormal stuff parents should worry about is a less-than-puberty-age child starting to develop stinky sweat, especially if it’s associated with early puberty,” says Dr. Howard Reinstein, a spokesman for the American Association of Pediatricians who serves as clinical faculty at Children’s Hospital Los Angeles and the UCLA Medical Center. “Being an early bloomer is okay. If you get a little bit of hair when you’re 9, 10, 11, that’s one thing. If you’re 5 or 6 that shouldn’t happen. The concern is that something’s wrong.”
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The most common manifestation of early puberty, central precocious puberty, results in the early production of estrogen and testosterone, which triggers abnormal growth spurts that can result in taller-than-average height or a quick spurt followed by suspended growth. In addition, it can result in psychological and behavioral issues.
That sounds like a lot of hullabaloo over a little funkiness under the arms, but nonetheless, it is a cause for concern in young children. In addition, there are genetic metabolic diseases that can cause odor, such as Trimethylaminuria, also known as fish odor syndrome, which is exactly what it sounds like. But those are blessedly rare.
More often than not child odor is likely just a case of poor hygiene, which simply calls for an increase in washing and some preventative measures for kids who are naturally a bit more sweaty. Parents can also monitor the child’s diet, limiting more pungent foods like curry and garlic. Some studies also indicate that organic milk devoid of hormones can reduce odor. And if all else fails, deodorant for kids is a powerful weapon.
“Even young kids who are excessive sweaters, we may use an antiperspirant they can tolerate,” says Dr. Reinstein, adding that parents should monitor the underarms for irritation. “Even with good hygiene, some kids continue to have a smell to their sweat. Some people, not just kids, have hyperhidrosis — they have sweaty hands and feet, and they’re always sweaty even when they’re not exercising and it’s not hot. People who have that kind of sweat can develop some odor also.”
Nobody wants to be the parent with the stinky kid, and nobody wants to let warning signs go unchecked. But the majority of the time, a kid’s odor can be traced to the fact that kids are generally prone to touching stinky stuff and carrying their odors around with them.