Alopecia Areata vs Male Pattern Baldness: How to Tell Them Apart

This page shows how the two differ, what each is treated with, and who to see. We do not diagnose. A dermatologist can tell them apart, often in one visit.

The quick comparison

What alopecia areata is

Alopecia means hair loss. Areata means patchy. The AAD says "Alopecia areata is a disease that causes hair loss. Most people lose hair on their scalp or beard area, but hair loss can occur anywhere on your body" (AAD: alopecia areata).

It is an autoimmune disease, which means the body's defense system attacks its own tissue, here the hair roots. The roots are not destroyed, which is why hair can come back. It is not contagious.

The National Institute of Arthritis and Musculoskeletal and Skin Diseases describes the typical start: "Hair typically falls out in small, round patches about the size of a quarter, but in some cases, hair loss is more extensive" (NIAMS: alopecia areata, read 14 Nov 2026). It notes that "Anyone can have alopecia areata" and that most people get it "in their teens, twenties, or thirties."

Patchy hair loss: the signs

NIAMS lists clues a doctor looks for. Around the edge of a patch there are often short broken hairs, called exclamation point hairs, that are "narrower at their base than their tip" (NIAMS: alopecia areata). The skin is usually smooth, with "no sign of a rash, redness, or scarring." Some people feel tingling, burning or itching before the hair falls out. Some people also get nail changes.

In men, a bald patch in the beard is a common first sign. The AAD calls this alopecia barbae. When the whole scalp goes, it is alopecia totalis. When all body hair goes, which is rare, it is alopecia universalis.

What male pattern baldness is

Male pattern baldness, or male pattern hair loss, is the most common kind of hair loss in men. It runs in families. DHT, a hormone made from testosterone, slowly shrinks hair roots on the top of the head. Each new hair grows in thinner and shorter.

The AAD says it starts "as a receding hairline or bald spot on the top of your head" and that it "can cause thinning and hair loss for years" (AAD: male pattern hair loss treatment, read 14 Nov 2026). It does not cause sudden, smooth, round patches. Our Norwood scale guide shows its usual stages.

Can you have both?

Yes. They are separate conditions, and having one does not protect you from the other. A man with a thinning crown can also get a round patch in his beard. Each is treated on its own terms, which is one more reason to get the patches checked.

How alopecia areata is treated

Hair often regrows, but the course is hard to predict. The AAD says "Some people who lose their hair, regrow it, and never have another episode" but "More often, people lose their hair, only to see it regrow and fall out again" (AAD: alopecia areata). Regrown hair may come back white and fine at first.

No treatment ends the disease for good. Treatment can help hair come back sooner. For a few patches, the AAD says steroid shots into the patch are "considered the most effective treatment for people who have a few patches of hair loss" (AAD: alopecia areata treatment, read 14 Nov 2026). For widespread loss, there are newer pills.

JAK inhibitors: the FDA-approved pills

JAK inhibitors are pills that calm the overactive immune signals behind the attack. The AAD says "The U.S. Food and Drug Administration (FDA) has approved three JAK inhibitors to treat alopecia areata" (AAD: alopecia areata treatment).

All three labels carry a boxed warning, the FDA's strongest kind, about serious infections, cancer, heart events and death. That is why a specialist prescribes and monitors them, with blood tests. None of the programs on this site sells them.

Why pattern hair loss drugs do not fit alopecia areata

Finasteride works by lowering DHT. Alopecia areata is driven by the immune system, not DHT, so finasteride is not used for it. The over-the-counter minoxidil label tells you not to use it if "your hair loss is sudden and/or patchy" (DailyMed: Men's Rogaine Extra Strength label, read 14 Nov 2026). A dermatologist may still use minoxidil as one part of an alopecia areata plan, but that is their call.

So if you have smooth round patches, see a dermatologist before you buy a hair loss subscription.

Who to see

For patches, sudden loss, or loss of eyebrows or beard hair: a board-certified dermatologist. The AAD says a dermatologist "can tell you if you have this type of hair loss and what may help you regrow your hair."

For slow thinning at the hairline or crown: a dermatologist, your own doctor, or an online program. Our male pattern baldness treatment guide covers the options.

What pattern hair loss treatment costs

For male pattern baldness, generic finasteride starts at $0.83 a tablet at Strut Health. The cheapest hair loss plan we track is Keeps at $14 a month, checked November 14, 2026. Every plan is on our hair loss price page. JAK inhibitors for alopecia areata are not sold through these programs; your dermatologist and insurer set that cost.