Alopecia symptoms depend on the type of hair loss you’re experiencing, but the most recognizable sign is hair falling out in round, quarter-sized patches on the scalp. Some forms cause gradual thinning instead of distinct bald spots, while others produce widespread shedding over a short period. Understanding the specific pattern, location, and accompanying signs helps distinguish one type from another.
Alopecia Areata: Patchy, Sudden Hair Loss
Alopecia areata is an autoimmune condition affecting roughly 2% of the global population. It typically begins with sudden loss of round or oval patches of hair on the scalp, though it can affect the beard, eyebrows, or eyelashes. The bare patches are usually smooth, with no rash, redness, or scarring on the exposed skin.
One of the most distinctive signs is “exclamation point” hairs around the edges of a patch. These are short, broken strands that are thicker at the tip and narrow toward the scalp, almost like tiny exclamation marks. You might also notice small black dots within the patch where broken hair shafts sit just inside the follicle opening. Some people feel tingling, burning, or itching on a spot of skin right before the hair falls out, though the patches themselves are usually symptom-free.
In rare cases, patches may turn slightly red, purple, or gray. White hairs sometimes grow within or around the affected area. The condition can also follow less common patterns. In ophiasis alopecia, hair loss forms a band along the sides and back of the head rather than isolated circles. When hair loss covers the entire scalp, it’s called alopecia totalis. When it extends to all body hair, including eyebrows, eyelashes, and limb hair, it’s called alopecia universalis.
Nail Changes That Accompany Alopecia Areata
Hair isn’t the only thing affected. Nail abnormalities show up in 14 to 19% of adults with alopecia areata, and the rate may be higher in children. The most common change is pitting, which looks like tiny dents or pinprick-sized holes across the surface of a fingernail. Rough, sandpaper-textured nails (a condition called trachyonychia) appear in 8 to 14% of cases.
Other nail signs include red spots on the half-moon at the base of the nail, lengthwise ridges, small white spots, and pigmented streaks running from base to tip. Toenails are rarely affected. Nail changes tend to correlate with more severe hair loss, so people with total scalp or total body hair loss are more likely to notice them.
Male and Female Pattern Hair Loss
Androgenetic alopecia, the most common form of hair loss overall, looks different in men and women. In men, thinning typically starts at the temples and the crown of the head. Over time, these areas merge, often leaving a horseshoe-shaped ring of hair around the sides and back. The progression is gradual, sometimes spanning years or decades.
Women rarely lose hair in the same receding pattern. Instead, thinning tends to spread across the central scalp while the front hairline stays mostly intact. A widening part line is often the earliest sign. When viewed from above, the thinning sometimes forms a triangular or “Christmas tree” shape along the midline, with more noticeable loss toward the front of the scalp. Thinning at the temples is common in women as well, but complete baldness in any one area is unusual.
Stress-Related Shedding
Telogen effluvium is a temporary form of hair loss triggered by physical or emotional stress, illness, surgery, major weight loss, or hormonal shifts like childbirth. The hallmark symptom is diffuse shedding rather than bald patches. Healthy people typically lose up to 100 strands of hair per day. With telogen effluvium, that number can climb to 300 strands a day, which often shows up as clumps in the shower drain, on your pillow, or tangled in a hairbrush.
The timing is the key clue. Hair loss tends to start two to three months after the triggering event, which means the stressor may feel long past by the time shedding begins. The hair thins evenly across the scalp rather than concentrating in one spot, and the scalp itself looks normal with no redness, scaling, or scarring.
Traction Alopecia: Hair Loss From Tension
Traction alopecia results from repeated pulling on the hair, usually from tight hairstyles like ponytails, braids, buns, or extensions worn over months or years. The earliest warning signs include redness, small bumps, and white skin flakes attached to the hair shafts (called hair casts) along the margins of a thinning area closest to where the tension is applied.
A characteristic feature is the “fringe sign,” a rim of slightly longer hairs at the edge of the bald patch farthest from the source of tension. Shorter hairs within the patch itself are often spared. If the pulling continues long enough, the follicles can be permanently damaged, and the hair loss becomes irreversible. The areas most commonly affected are the hairline, temples, and the edges around the forehead and ears.
Scarring Alopecia
Most types of alopecia leave the hair follicles intact, meaning regrowth is possible. Scarring (cicatricial) alopecia is different. It destroys the follicles entirely and replaces them with scar tissue. The affected scalp often looks shiny and smooth where the follicles once were, and the small openings that hair normally grows from are no longer visible.
One common form, central centrifugal cicatricial alopecia (CCCA), starts at the crown and gradually spreads outward. Beyond the visible hair loss, some people develop intense itching or pain on the scalp. Because the damage is permanent, recognizing these symptoms early matters more than with other types of hair loss. Redness, tenderness, or a burning sensation on the scalp, especially if it’s concentrated in one area and accompanied by thinning, warrants prompt evaluation.
How Doctors Evaluate Hair Loss
A dermatologist can often identify the type of alopecia through a visual exam and a simple pull test. During the test, the doctor grasps about 40 strands of hair from different areas of the scalp and tugs gently. If six or more strands come out, you have active hair loss. The shape and condition of the pulled hairs, whether they have intact roots, broken shafts, or the tapered exclamation-point shape, help narrow the diagnosis further.
In some cases, a small scalp biopsy or blood tests may be needed to rule out thyroid disorders, iron deficiency, or other conditions that mimic alopecia symptoms.
Early Signs of Regrowth
With alopecia areata specifically, regrowth often begins as fine, pale, almost colorless hairs within the bald patches. These short, soft hairs may initially come in white or lighter than your natural color before gradually darkening. The texture can also differ at first, sometimes growing in wavier or coarser than your original hair. These early vellus hairs are a positive sign that the follicles are still functional and producing new growth, even if the cosmetic result takes several more months to become noticeable.