Alopecia can look very different depending on the type, ranging from smooth round patches to gradual thinning across the crown to a receding hairline. Because “alopecia” is simply the medical term for hair loss, the visual signs vary widely. Here’s what each major type looks like so you can identify what you’re seeing.
Alopecia Areata: Smooth, Round Patches
Alopecia areata is the type most people picture when they hear the word “alopecia.” It typically appears as one or more coin-sized bald patches on the scalp, though it can affect the beard, eyebrows, or any area with hair. The exposed skin usually looks smooth and normal in color, without scarring or visible irritation. Patches tend to appear suddenly, sometimes within days.
The hallmark sign is something called exclamation mark hairs. These are short, broken hairs about 1 to 2 centimeters long that taper toward the scalp, wider at the top and narrower at the base, resembling a tiny exclamation point. Finding these at the edges of a bald patch is one of the strongest visual clues that hair loss is from alopecia areata rather than another cause. Under magnification, the tips of these hairs look frayed and brush-like, while the lower portion appears nearly normal.
If you look closely at the scalp inside a patch, you might notice tiny yellow or yellow-pink dots where hair follicles sit empty, along with small black dots that are remnants of broken pigmented hairs sitting just below the skin surface. These aren’t always visible to the naked eye, but a dermatologist using a handheld magnifier will look for them specifically. You may also see fine, pale, wispy hairs regrowing within older patches, which is a positive sign.
Alopecia areata can also affect your nails. The most common change is pitting: tiny, shallow dents arranged in a grid-like pattern across the nail surface. They’re often so subtle you might not notice unless you look carefully in good light. Some people develop rough, sandpapery nails that look dull and lusterless, with fine ridges running lengthwise. White spots on the nails and brittle, splitting tips are also associated with the condition.
Male Pattern Hair Loss: Receding and Thinning
Male pattern hair loss follows a predictable shape. It almost always starts at the temples, creating a gradually deepening M or V shape along the front hairline. At the same time, or sometimes later, the hair on the crown begins to thin. The skin on the scalp stays normal, the hair follicles remain visible, and there’s no scarring or redness. What you see is simply thinner, finer hair that becomes progressively sparser.
In early stages, the recession at the temples is mild and the hairline may just look slightly higher than it used to. As it progresses, the thinning temples deepen into noticeable triangular areas of bare skin, and a bald spot forms on the top of the head. In more advanced stages, the two zones connect, leaving hair only on the sides and back of the head in a horseshoe pattern. Some men retain a small island of hair at the very front of the scalp even as the rest thins. Not everyone progresses to the most advanced stages; many men stabilize at a partial thinning pattern.
Female Pattern Hair Loss: Widening Part Line
Women lose hair differently. Instead of a receding hairline, the first visible sign is usually a widening part line. When you look down at a woman’s scalp from above, the center part appears broader than it used to, and more scalp shows through. The front hairline almost always stays intact, which is a key visual distinction from the male pattern.
In mild cases, the thinning is limited to a strip along the crown just behind the front hairline. It can be subtle enough that the person notices it before anyone else does, often from seeing more scalp in photographs taken from above or behind. As it progresses, the thinning spreads across a larger area of the crown, and the remaining hairs look finer and less dense. Complete baldness on top, while possible, is uncommon in women.
Telogen Effluvium: Diffuse Shedding
Telogen effluvium doesn’t create bald patches. Instead, you notice an alarming amount of hair falling out all over your head. You’ll find clumps in the shower drain, on your pillow, and tangled in your brush. The hair that falls out typically has a small white bulb at the root, a rounded club shape made of keratin. This white bulb is normal and doesn’t mean the follicle came out with it.
Visually, the hair looks thinner overall rather than missing in specific spots. It often follows a stressful event, surgery, illness, or significant weight loss by about two to three months. Because the thinning is spread evenly, it can be hard to see a dramatic change in the mirror. You’re more likely to notice it from the volume of hair collecting on surfaces than from any visible scalp showing through.
Traction Alopecia: Hairline Recession From Tension
Traction alopecia results from hairstyles that pull on the hair over time: tight ponytails, braids, buns, extensions, or weaves. The hair loss appears exactly where the tension is greatest, most commonly along the front hairline and temples. In early stages, you might notice short broken hairs and small bumps or redness along the hairline.
A distinctive visual marker is the “fringe sign,” a thin line of retained short hairs right along the very edge of the hairline, even as the hair behind it has thinned or disappeared. In a study of women with traction alopecia, 100% of those with marginal hairline involvement showed this fringe sign. Over time, if the tension continues, the hairline recedes further back and the loss can become permanent. The scalp in affected areas usually looks normal and smooth, without the scarring or redness you’d see in other types.
Scarring Alopecia: Permanent and Distinct
Scarring alopecia looks different from all other types because the hair follicles themselves are destroyed. The bald areas appear smooth and shiny, and if you look closely, you won’t see the tiny pore-like openings where hair normally grows. Those follicle openings have closed permanently. The patches can be single or multiple and may appear anywhere on the scalp.
Some forms of scarring alopecia come with visible inflammation: redness, flaking, scaling, or even small blisters around the edges of the affected area. Others are subtler, with the hair simply disappearing and the skin looking pale and featureless. The key visual difference from alopecia areata is the quality of the skin. In alopecia areata, the scalp in the bald patch still looks like normal scalp with visible follicle openings. In scarring alopecia, the skin looks sealed over, like a scar.
This distinction matters because scarring alopecia causes irreversible loss. If you notice bald areas where the skin looks unusually smooth and shiny, or where redness and irritation surround the hair loss, that warrants prompt evaluation. Early treatment can preserve the remaining hair even though the already-scarred areas won’t regrow.
How to Tell Which Type You’re Seeing
A few quick visual clues help narrow things down:
- Round, smooth patches with short tapered hairs at the edges: likely alopecia areata
- Receding temples and thinning crown in a man: male pattern hair loss
- Widening part line with intact front hairline in a woman: female pattern hair loss
- Hair falling out in handfuls with white bulbs at the root, no visible bald spots: telogen effluvium
- Hairline thinning where tight hairstyles pull, with a fringe of short hairs at the edge: traction alopecia
- Shiny, smooth patches with no visible follicle openings, possibly with redness or scaling: scarring alopecia
A dermatologist can confirm the type using a magnifying tool called a dermatoscope, which reveals details invisible to the naked eye: the yellow and black dots of alopecia areata, the miniaturized hairs of pattern baldness, or the absent follicle openings of scarring types. If your hair loss appeared suddenly, is progressing quickly, or involves redness and irritation, getting a proper diagnosis early gives you the most options.