Alopecia can look very different depending on the type, ranging from small, smooth round patches to widespread thinning across the entire scalp. Some forms stay mild for years, while others progress to complete hair loss on the head and body. Knowing what each type looks like helps you identify what you’re dealing with and have a more informed conversation with a dermatologist.
Alopecia Areata: Smooth, Round Patches
Alopecia areata is the form most people picture when they hear the word “alopecia.” It typically starts as one or a few coin-sized bald patches, usually between 1 and 4 centimeters across. The exposed skin is smooth, not rough or scaly, and may have a peach or skin-colored tone. There’s no visible scarring, redness, or flaking inside the patch itself.
One distinctive clue is “exclamation point hairs” at the edges of a patch. These are short, broken hairs that are narrower at the base and wider at the tip, shaped like an exclamation mark. They’re tiny and often require a magnifying tool to see clearly, but they’re a hallmark sign that helps distinguish alopecia areata from other causes of hair loss. You might also notice that the patch appears suddenly, sometimes within a few days or weeks, rather than gradually thinning over months.
When Patches Spread Further
In some people, alopecia areata stays limited to a few patches that may even regrow on their own. In others, it progresses. Alopecia totalis means all hair on the scalp is lost, leaving a completely smooth head. Alopecia universalis goes further: every hair on the body is gone, including eyebrows, eyelashes, facial hair, arm and leg hair, and nasal hair. The scalp and skin remain smooth and unscarred in all of these forms.
This progression can happen gradually over months or move quickly. Some people lose eyebrow or eyelash hair before the patches on their scalp fully connect, so partial loss of facial hair alongside scalp patches is a visual pattern worth paying attention to.
Nail Changes That Accompany Hair Loss
Alopecia areata doesn’t only affect hair. Nail changes show up in a significant number of cases and can sometimes appear before noticeable hair loss begins. The most common change is pitting: tiny, shallow dents across the nail surface arranged in a grid-like geometric pattern. Unlike the deeper pits seen in psoriasis, these are very superficial and often go unnoticed unless you look closely.
Another recognizable change is trachyonychia, where the nails develop a rough, sandpapered texture and lose their normal shine. They may also show excessive ridging running lengthwise, or become brittle and prone to splitting at the tips. Some people develop small white spots scattered across the nail in a geometric pattern, or notice that the half-moon area at the base of the nail takes on a mottled, reddish appearance. None of these nail changes are painful, but they’re a useful visual signal that the immune system is affecting more than just hair follicles.
Male and Female Pattern Hair Loss
Androgenetic alopecia, the most common type of hair loss overall, looks quite different from alopecia areata. In men, it follows a predictable pattern: the hairline recedes at the temples first, forming an M-shape or widening triangular areas on either side of the forehead. Over time, thinning spreads to the crown (the top of the head), and these two areas may eventually merge, leaving hair only around the sides and back in a horseshoe shape. Some men lose hair primarily on the crown while the front hairline stays relatively intact.
In women, the pattern is different. The frontal hairline usually stays preserved, but hair gradually thins across the top and crown of the scalp. The earliest visible sign is often a widening part line. As thinning progresses, more scalp becomes visible through the hair, particularly on top, while the sides and back retain normal density. Complete baldness in women with this type is rare, but the thinning can become pronounced enough that the scalp is clearly visible under normal lighting.
Traction Alopecia: Hair Loss From Tension
Traction alopecia results from hairstyles that pull on the hair over time, including tight ponytails, braids, cornrows, and extensions. Visually, it tends to follow the areas where tension is greatest, most commonly along the frontal hairline and temples. Early signs include small bumps around hair follicles, broken hairs, and reduced hair density in the affected zone.
A distinctive feature called the “fringe sign” is often visible: a thin border of fine, wispy, miniaturized hairs along the front or sides of the hairline, even as the hair behind that fringe has thinned significantly or disappeared. You may also notice tiny white or translucent sleeves clinging to the hair shafts near the scalp, called hair casts, which indicate ongoing tension damage. If the pulling continues long enough, traction alopecia can become permanent as the follicles scar over.
Diffuse Thinning Across the Scalp
Telogen effluvium causes hair to shed diffusely rather than in patches. Instead of defined bald spots, you notice more hair than usual falling out in the shower, on your pillow, or when brushing. The thinning is spread evenly across the scalp, so it doesn’t create distinct bare areas. Hair density drops overall, and ponytails may feel noticeably thinner.
This type of shedding usually begins abruptly, often two to three months after a trigger like major stress, illness, surgery, significant weight loss, or hormonal shifts. Because the hair follicles themselves remain healthy and intact, the scalp looks normal between hairs. There’s no scarring, no redness, no patch borders. It can be hard to see in the mirror at first, but running your fingers through your hair or comparing photos over a few weeks makes the reduced volume more apparent.
Scarring Alopecia: Permanent and Distinct
Scarring (cicatricial) alopecia looks fundamentally different from the types above. In scarring forms, the hair follicles are permanently destroyed and replaced by fibrous scar tissue. The scalp in affected areas may appear shiny, smooth, or slightly waxy, and the tiny pore-like openings where hairs normally emerge are visibly absent. This loss of follicular openings is a key visual difference from non-scarring types, where those openings remain even if no hair is currently growing.
Frontal fibrosing alopecia, one specific scarring type, creates a distinctive band-like recession of the hairline. The frontal hairline slowly creeps backward in a symmetrical pattern, and the skin left behind looks pale and scarred. Occasionally, isolated single hairs remain scattered in the affected zone, sometimes called the “lonely hair sign.” This recession can extend around the ears to the sides and back of the scalp.
How Appearance Varies by Skin Tone
The color cues of alopecia look different depending on your skin tone. On lighter skin, inflammation around active hair loss often shows up as redness or pink discoloration. On darker skin tones, the same inflammation may appear as darkened (hyperpigmented) patches or, in scarring types, as lighter or depigmented plaques that stand out against surrounding skin. These lighter scarred areas can be especially noticeable in people with deeper complexions.
Frontal fibrosing alopecia in darker skin types frequently presents with a band of darker pigmentation along the receding hairline rather than redness. This means the visual signs that prompt someone to seek evaluation can look completely different depending on skin color, and comparing your hair loss to photos that don’t match your skin tone can be misleading. Looking for texture changes, loss of follicular openings, and changes in hair density is often more reliable across all skin tones than relying on color alone.