Baby Hair Not Growing - Bald Baby Concerns
The short answer
Hair growth in babies varies enormously and is primarily genetic. Some babies are born with thick hair and some are nearly bald until age 2-3. Both are completely normal. Many babies lose their newborn hair in the first few months (telogen effluvium) and grow new hair that may be a different color or texture. A bald spot on the back of the head from friction (sleeping position) is very common and resolves once the baby is more mobile. Most "bald babies" grow a full head of hair by age 2-3.
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By Age
What to expect by age
0-3 months
Newborn hair loss is extremely common. The hair your baby was born with often falls out between 1-4 months as the growth cycle resets. Some babies shed dramatically and look nearly bald, while others lose hair gradually. This is called telogen effluvium and is caused by the hormonal shift after birth. The new hair that grows in may be a completely different color and texture from the birth hair. Do not use any products to try to speed hair growth - time is the only solution.
3-6 months
A bald spot on the back of the head is very common at this age from friction against the crib mattress. This is not a sign of nutritional deficiency - it is a mechanical result of spending time on their back (which is the correct safe sleep position). As your baby starts rolling and spending more time sitting and on their tummy, the bald spot fills in. New hair growth should be starting to appear, though it may be very fine and light.
6-12 months
Hair growth varies tremendously at this age. Some babies have thick hair by 6 months and others are still mostly bald. Both are normal. Hair texture and color may continue to change. If your baby has distinct patches of complete hair loss (as opposed to overall thin/sparse hair), this could indicate alopecia areata (an autoimmune condition) or ringworm (a fungal infection) and should be evaluated. Overall thin or slow-growing hair is almost always just genetics.
12-36 months
Most babies have visible hair by their first birthday, but some take until age 2-3 to develop a full head of hair. This is particularly common in babies with very fair, fine hair. If your toddler has no hair growth at all by age 2, or if they develop sudden bald patches, discuss with your pediatrician. Nutritional deficiencies (iron, zinc, biotin) can affect hair growth but are usually accompanied by other symptoms. Compulsive hair pulling (trichotillomania) can emerge in toddlerhood and causes patchy loss.
What Should You Do?
When to take action
- Your baby lost their newborn hair and new hair is slowly growing in
- Your baby has a bald spot from sleeping on their back - this is normal and resolves with increased mobility
- Hair growth is slow but steady, with new fine hair visible
- Family members also had sparse hair as babies that filled in by age 2-3
- Your baby has distinct circular bald patches (not from friction) that could indicate alopecia or ringworm
- Your toddler's hair seems to be thinning or falling out rather than growing in
- Your baby has no hair growth at all by age 2
- You notice your toddler pulling out their own hair
- Sudden hair loss alongside other symptoms like weight changes, fatigue, or skin changes
- Bald patches with redness, scaling, or broken hairs (possible fungal infection)
- Hair loss accompanied by overall poor growth, pallor, or your child seeming unwell
Sources
Related Resources
Trust your instincts. If something feels wrong, reach out to your pediatrician.
Worrying about your baby means you care. That is a good thing.
Related Physical Concerns
Baby Dry Scalp and Flaking - Cradle Cap
Dry, flaky skin on your baby's scalp is most likely cradle cap (infantile seborrheic dermatitis), which affects up to 70% of babies in the first 3 months. Cradle cap appears as yellow, oily, scaly patches or thick crusty buildup on the scalp. Despite its appearance, it is not painful, itchy, or contagious, and it almost always resolves on its own by 6-12 months. Treatment involves loosening the scales with oil, gentle brushing, and regular shampooing. It is not caused by poor hygiene.
Red Ring-Shaped Rash on Baby - Ringworm and Other Causes
A ring-shaped (annular) rash on a baby can be ringworm (a fungal infection, not actually a worm), granuloma annulare, nummular eczema, or erythema migrans (from a tick bite). Ringworm is the most common cause - it appears as a red, scaly ring with clearing in the center that slowly expands. It is contagious but treatable with over-the-counter antifungal cream. If the rash is a bull's-eye pattern (red ring with central clearing) after a potential tick exposure, seek evaluation for Lyme disease.
Signs of Nutritional Deficiency in Toddlers
The most common nutritional deficiencies in toddlers are iron, vitamin D, zinc, and calcium - especially in picky eaters and children who drink excessive amounts of milk. Signs of iron deficiency (the most common) include pallor, fatigue, irritability, poor appetite, and slow weight gain. Most picky toddlers get adequate nutrition despite their limited diets, but if your child eats fewer than 10-15 foods total or avoids entire food groups, a nutritional evaluation may be helpful.
My Baby Seems to Use One Side More Than the Other
Babies should use both sides of their body fairly equally during the first 18 months of life. While slight preferences can be normal, a consistent pattern of favoring one side - using one arm much more than the other, crawling with one leg dragging, or turning the head predominantly one way - should always be discussed with your pediatrician. Early identification of asymmetry leads to the best outcomes.
My Baby Only Army Crawls
Army crawling (also called commando crawling) is a completely valid and normal way for babies to move. Many babies army crawl for weeks or even months before transitioning to hands-and-knees crawling, and some skip hands-and-knees crawling entirely. What matters is that your baby is independently mobile and exploring their environment.
One Side of My Baby's Body Moves Differently
Babies should generally use both sides of their body equally. If one side consistently moves differently, is weaker, stiffer, or less coordinated, this warrants evaluation. Asymmetric movement can indicate hemiplegia (cerebral palsy affecting one side), brachial plexus injury, or other neurological conditions that benefit from early therapy.