Why Am I Still Shedding Hair on Minoxidil—and Could Surgery or Perimenopause Be Making It Worse?
Ongoing hair shedding can be especially frustrating when you are already taking treatment for hair loss. Many women worry that continued shedding means minoxidil is not working, when in reality more than one type of hair loss may be occurring at the same time.
Recently, a 37-year-old woman returned to Village Dermatology for follow-up of hair loss involving the scalp, eyebrows, and eyelashes. Her hair loss had developed gradually over approximately one year and was moderate in severity.
She was already taking oral minoxidil, but continued to notice shedding. She also had several possible contributing factors, including a history of neck surgery in October, current perimenopause, and ongoing hormone replacement therapy.
Her case raises a common question:
“Why am I still shedding hair while taking minoxidil, and could surgery or perimenopause be making my hair loss worse?”
After evaluation, the patient was found to have androgenetic alopecia with underlying telogen effluvium. The treatment discussion focused on whether to increase minoxidil and whether to add finasteride to better address the patterned component of her hair loss.
For women searching for a hair loss dermatologist in Houston or Katy, Texas, this case illustrates why continued shedding does not always mean one treatment has failed.
What Is Androgenetic Alopecia in Women?
Androgenetic alopecia, also called female pattern hair loss, is a slowly progressive form of hair thinning.
In women, it often appears as:
Diffuse thinning across the scalp
A widening central or midline part
Reduced overall density
Relative preservation of the frontal hairline
This patient's examination showed patterned hair loss on the scalp, supporting the diagnosis of androgenetic alopecia.
Because this type of hair loss is generally progressive, treatment is often aimed at preserving existing follicles and improving density where possible.
Why Was She Still Shedding While Taking Oral Minoxidil?
The patient reported continued shedding while taking one-half tablet of oral minoxidil.
Continued shedding can occur for several reasons.
First, patients beginning minoxidil may experience a temporary increase in shedding during the early treatment period. She was counseled that shedding can occur during the first 8–10 weeks after starting minoxidil.
Second, she also had telogen effluvium, which causes diffuse shedding and can occur independently of androgenetic alopecia.
In other words, she likely had two processes happening at the same time:
Androgenetic alopecia: chronic patterned thinning.
Telogen effluvium: increased shedding triggered by a physiologic stressor.
Treating the patterned hair loss does not necessarily stop telogen effluvium immediately.
Could Her Neck Surgery Have Triggered Telogen Effluvium?
Yes, surgery can be an important potential trigger for telogen effluvium.
The patient reported having neck surgery in October. Telogen effluvium can occur after major physical stressors, including:
Surgery
Illness
Significant emotional stress
Sudden weight loss
Iron deficiency
Thyroid disease
Certain medications
The shedding typically develops after the triggering event rather than immediately.
This is why a detailed timeline is important during a hair loss consultation.
What Is Telogen Effluvium?
Telogen effluvium is a form of diffuse hair shedding.
A triggering event causes more hair follicles than usual to shift into the resting phase of the hair-growth cycle. Those hairs are then shed.
Patients may suddenly notice:
More hair in the shower
Increased shedding while brushing
Hair collecting on clothing
A thinner ponytail
More visible scalp despite no distinct bald patches
The reassuring aspect of telogen effluvium is that it is often self-limited.
Patients were counseled that the condition commonly improves within months once the underlying trigger has resolved.
Can Perimenopause Contribute to Hair Thinning?
Hormonal changes may be relevant when evaluating hair loss in women.
This patient was perimenopausal and receiving hormone replacement therapy, which was part of her overall medical history considered during the visit.
Female pattern hair loss may become more noticeable during periods of hormonal change. However, not every episode of shedding during perimenopause has the same cause.
That is why the patient's examination and history supported both androgenetic alopecia and underlying telogen effluvium, rather than attributing all of her hair loss to hormones alone.
Why Was Increasing Minoxidil Discussed?
The patient was taking minoxidil 2.5 mg tablets at one-half tablet daily.
Increasing the dose to one full tablet daily was discussed as a possible way to further treat her patterned hair loss.
However, she was concerned that a dosage change could cause additional shedding and was hesitant to increase it.
This is an important part of individualized treatment: even when a medication adjustment is available, the patient's concerns, tolerability, and comfort with the plan matter.
The documented prescription continued minoxidil while another treatment was added.
What Side Effects Can Oral Minoxidil Cause?
Before continuing oral minoxidil, potential side effects were reviewed.
Patients were advised to contact the office and discontinue treatment if concerning symptoms developed, including:
Chest pain
Shortness of breath
Ankle swelling
Fluid retention
Low blood pressure
Increased heart rate
Dizziness
Other possible effects discussed included unwanted hair growth and lightheadedness.
Because oral minoxidil is a systemic medication, it should be used under medical supervision.
Why Was Finasteride Added?
Because androgenetic alopecia was contributing to the patient's chronic thinning, finasteride was discussed as an additional treatment option.
After reviewing the risks, benefits, and potential side effects, she elected to begin:
Finasteride 5 mg once daily
Finasteride works through a different mechanism than minoxidil and may be considered in selected female patients with patterned hair loss.
Potential side effects discussed included decreased libido, sexual dysfunction, and breast tenderness.
Can Women Take Finasteride for Hair Loss?
Finasteride may be considered in appropriately selected women, but pregnancy prevention is extremely important because the medication is teratogenic.
This patient was specifically counseled about the importance of not becoming pregnant while taking finasteride.
Finasteride is not appropriate for every woman with hair loss, and the decision to use it depends on the patient's age, reproductive status, medical history, and overall treatment plan.
Patients should never start finasteride for hair loss without discussing these risks with a qualified clinician.
Why Combine Minoxidil and Finasteride?
Minoxidil and finasteride target hair loss in different ways.
Minoxidil is used to stimulate and support hair growth.
Finasteride reduces androgen-related signaling that can contribute to follicle miniaturization in patterned hair loss.
For patients with androgenetic alopecia who continue to thin despite one therapy, combining treatments may be considered.
In this patient's case, the plan was to introduce finasteride while continuing minoxidil.
Will Treating Androgenetic Alopecia Help Telogen Effluvium Too?
Not directly in every case, but treatments used for androgenetic alopecia may support recovery while telogen effluvium resolves.
The most important step with telogen effluvium is identifying and correcting the underlying trigger when possible.
If the trigger has already passed—such as recovery after surgery—the hair cycle often gradually normalizes over time.
Minoxidil may be useful in prolonged cases and may also help when androgenetic alopecia is present at the same time.
Why Can Hair Loss Affect More Than the Scalp?
This patient reported hair loss involving the scalp, eyebrows, and eyelashes.
Hair loss outside the scalp can have a number of potential explanations, which is why the distribution should be documented and evaluated carefully.
In this case, the formal diagnoses focused on scalp androgenetic alopecia and telogen effluvium.
If eyebrow or eyelash loss persists or progresses, further evaluation may be appropriate depending on the clinical findings.
How Long Does Telogen Effluvium Last?
Telogen effluvium is usually temporary.
Patients were counseled that it often resolves within approximately six months after the inciting event, although the timeline can vary.
Hair recovery also takes time because follicles must re-enter the growth phase before visible density improves.
This means that shedding may decrease before the patient notices significant cosmetic regrowth.
When Should I See a Dermatologist for Ongoing Hair Shedding?
Consider a hair loss evaluation when:
Shedding persists for several months
Hair density continues decreasing
The central part becomes wider
You recently experienced surgery or illness
Hair loss begins around menopause or perimenopause
You are already using minoxidil but remain concerned about shedding
Eyebrows or eyelashes are also thinning
You are considering prescription treatments such as finasteride
The goal is to identify whether one or several types of hair loss are occurring simultaneously.
Female Hair Loss Treatment in Houston and Katy, Texas
This patient's case demonstrates why persistent shedding during hair-loss treatment does not necessarily mean that treatment has failed.
Her evaluation supported androgenetic alopecia with underlying telogen effluvium. Possible contributors to the temporary shedding included her history of surgery, while perimenopausal hormonal changes were also relevant to her overall hair-loss history.
After discussing her options, she elected to add finasteride 5 mg daily while continuing oral minoxidil, with follow-up planned in approximately six months.
If you are experiencing persistent shedding, widening of your part, gradual scalp thinning, or hair loss after surgery or hormonal changes, a dermatologist can help determine whether androgenetic alopecia, telogen effluvium, or more than one condition may be involved.
Patients searching for a female hair loss dermatologist in Houston, Texas, hair loss treatment in Katy, Texas, or evaluation of hair shedding despite minoxidil can schedule an appointment with Village Dermatology.
