Telogen Effluvium vs Male Pattern Baldness: How They Differ

This page compares the two side by side, explains the hair pull test, and says which one online hair loss programs treat. It is not a diagnosis. Some men have both at once, and only an exam can sort that out.

Telogen effluvium vs male pattern baldness at a glance

Sources: AAD shedding page, AAD causes page, MedlinePlus, all read 14 Nov 2026.

What is telogen effluvium?

Each hair grows for years, rests, then falls out. MedlinePlus explains: "Each strand of hair normally grows for 2 to 6 years, goes into a resting phase for several months, and then falls out" (MedlinePlus: androgenetic alopecia). Telogen is the medical name for that resting phase. Effluvium means outflow.

In telogen effluvium, a shock pushes many hairs into the resting phase at once. A few months later they all fall. The AAD says, "It's normal to shed between 50 and 100 hairs a day. When the body sheds significantly more hairs every day, a person has excessive hair shedding. The medical term for this condition is telogen effluvium" (AAD).

A 2024 review groups it with other shedding that is "usually self-limited", meaning it ends by itself once the cause stops (Dakkak et al. 2024, PubMed).

Stress shedding: common triggers

The AAD lists what often comes before excess shedding. Men may recognise these:

• Having "Lost 20 pounds or more"
• "Experiencing lots of stress", such as a sick loved one, a divorce or a lost job
• A high fever, or recovering from an illness with one
• Having "Undergone an operation"

The delay is the giveaway. The AAD says, "Most people notice the excessive hair shedding a few months after the stressful event." So the cause is often something that happened two or three months earlier, not this week.

If the stress does not go away, the shedding may not either. The AAD notes that "People who are constantly under a lot of stress can have long-term excessive hair shedding."

Weight loss drugs are a common trigger now. Our GLP-1 hair loss guide covers what those labels say.

What is male pattern baldness?

Male pattern baldness is the inherited kind. The AAD calls it "the most common cause of hair loss worldwide" (AAD: what causes hair loss). Its medical name is androgenetic alopecia, which simply means male pattern hair loss.

It is driven by DHT, a hormone made from testosterone. MedlinePlus says DHT can cause "a shorter growth period, resulting in shorter and thinner strands of hair." The hair does not fall out in a rush. Each hair grows back thinner and shorter until the root stops.

MedlinePlus describes the pattern in men as loss "beginning above both temples". The hairline moves back and the crown thins. Unlike shedding, it does not fix itself. The AAD says, "Without treatment, you will continue to lose hair."

The hair pull test

Dermatologists use a simple test to check how much hair is shedding. The AAD says that "Gently pulling on your hair tells your dermatologist a lot about how your hair is growing and whether it's prone to breaking" (AAD: diagnosis and treatment, read 14 Nov 2026).

The doctor holds a small bunch of hairs and pulls gently along their length. In a 2017 study of 181 people, the average was well under one hair per pull. The authors concluded: "Normal values for the hair pull test should be reduced to 2 hairs or fewer" (McDonald et al. 2017, PubMed). More than that can point to active shedding.

A pull test at home is not a diagnosis. Grip, hair length and the day you last washed can all change the count. A dermatologist also looks at the scalp up close, checks the hair roots, and may order blood tests.

Can you have both at once?

Yes, and it is common. A 2019 review of telogen effluvium lists "its distinction from androgenetic alopecia (AGA) with which it is often associated" as one of the hard parts of diagnosis (Rebora 2019, PubMed).

The AAD gives an example from its own patients. Someone may have obvious shedding after a big event and "may also have early hereditary loss, which isn't so obvious" (AAD: diagnosis and treatment). Once the shedding stops, the pattern loss is still there underneath.

How each is treated

Telogen effluvium. The main step is dealing with the cause. The AAD says that once the stress stops, "most people see their hair regain its normal fullness within 6 to 9 months" (AAD: what causes hair loss). A doctor may check iron, thyroid and other blood levels. Some prescribers use minoxidil to speed regrowth, but most shedding settles without a drug.

Male pattern baldness. This is what online hair loss programs treat. Finasteride is an FDA-approved pill that lowers DHT. Minoxidil foam is approved over the counter for the crown. The AAD says, "The earlier treatment is started, the better it works." Both work only while you keep using them.

One more note: minoxidil itself can cause shedding in the first weeks. That is a known, short-lived effect, covered in our minoxidil shedding timeline.

What treatment for pattern loss costs

The cheapest hair loss plan we track is Keeps at $14 a month, checked November 14, 2026. Keeps lists minoxidil foam at $8.92 a month. Our male pattern baldness treatment guide covers each option. Every program, scored on price and care, is on the best online hair loss programs.