Antidepressants, mood stabilisers and hair loss: what to discuss before stopping

Noticing more hair in the shower a few months after starting an antidepressant or a mood stabiliser can be upsetting, especially when you are already dealing with depression, anxiety or bipolar disorder. The first instinct may be to stop the tablets. That is usually the wrong first step. Hair loss linked to these medicines is real but uncommon for most of them, it is usually a temporary shedding pattern, and stopping a psychiatric medicine suddenly carries its own risks. This article explains which medicines have been linked to hair loss, what the hair loss usually looks like, other causes worth ruling out, and what to discuss with your doctor before any change.

(This article is general health information and is not a substitute for personal medical advice. Do not stop or change a prescribed medicine without talking to your doctor.)

Short answer

Several psychiatric medicines have been linked to hair loss, but for most people the risk is low. Among mood stabilisers, valproate has the clearest link: hair thinning or changes in hair colour or texture are listed as a side effect, and hair often grows back after the dose is lowered or the medicine is changed ^{1 2}. Lithium is also linked to hair loss, partly because long-term use can cause an underactive thyroid ^{3 4}. Among antidepressants, a large cohort study found a higher rate of hair loss diagnoses with bupropion than with SSRIs and SNRIs, though the absolute difference was small ⁵. Medicine-related hair loss is usually diffuse, non-scarring shedding (telogen effluvium) rather than bald patches ^{6 7}. Do not stop an antidepressant suddenly; your doctor can help plan a gradual change if one is needed ⁸. Also ask about other causes, including thyroid problems, low iron, recent illness and stress, which are common at the same time.

Why the timing can be confusing

Most medicine-related hair loss is telogen effluvium. In this pattern, a trigger pushes more hair follicles than usual into the resting (telogen) phase. Those hairs are shed roughly two to three months later ^{7 9}. That delay is why people often do not connect shedding with a new medicine, or why they blame the wrong thing.

It also matters because many triggers happen together. A person starting treatment for depression may also have had a major life stress, weight change, poor sleep, illness or a change in diet in the months before. Any of these can cause shedding too. For a fuller explanation of the pattern, see Chronic telogen effluvium: when shedding lasts for months and Sudden, severe hair fall: common causes and when to worry.

Mood stabilisers and hair loss

Valproate (sodium valproate, valproic acid)

Valproate is used for epilepsy, bipolar disorder and migraine prevention. Among psychiatric medicines it has the most consistent link with hair loss.

• The NHS lists thinning hair, or changes to the colour or texture of hair, as a side effect. If it bothers you, ask your doctor whether a lower dose is possible; hair often grows back after the dose is reduced or the medicine is switched ¹.
• A review of valproate-associated hair problems describes the main mechanism as telogen effluvium, with possible roles for low biotin, mineral deficiency and hormonal effects. It describes these hair changes as common and benign, and lists reassurance, hair care advice and, where possible, dose reduction or switching as the main measures ².
• In a hospital study in India, hair loss was reported by 24% of people taking valproate compared with about 3% of a control group, and lower biotinidase activity (an enzyme that recycles biotin) was linked with hair loss complaints ¹⁰. This was a small cross-sectional study, so it shows an association rather than proof.
• Some reviews mention biotin and other vitamin and mineral supplements as options for valproate-related hair loss, but the evidence is limited ². Biotin can also interfere with some blood tests, so tell your doctor if you take it. See Biotin for hair loss: do you need it?.

Valproate also has important pregnancy-related safety rules. If you could become pregnant, any decision about valproate must be made with your doctor, not by stopping or starting it on your own.

Lithium

Lithium is a long-established treatment for bipolar disorder. In a one-year study of people with bipolar disorder taking lithium in South India, about 38% developed some skin side effect, with acne-like eruptions and hair fall the most common ⁴.

There is also an indirect route. The NHS notes that taking lithium for a long time can cause problems with the thyroid gland, and that your doctor will arrange blood tests to check for this ³. An underactive thyroid can itself cause hair loss, along with tiredness and weight gain ¹¹. So if you are on lithium and your hair is thinning, a thyroid check is a sensible early step. See Thyroid problems and hair loss: signs to know.

Other mood stabilisers and antiseizure medicines

Several antiseizure medicines are also used as mood stabilisers. A literature review of antiseizure medicine-related hair loss found reports for valproate, lamotrigine and carbamazepine most often, along with many other drugs. Hair loss was diffuse and non-scarring, telogen effluvium was the most common pattern, and hair loss was typically reversible after dose adjustment ⁶.

Antidepressants and hair loss

Hair loss is listed as an uncommon or rare side effect for many antidepressants. The best comparative data come from a large United States health-claims study that followed more than one million new users of ten antidepressants ⁵:

• Compared with bupropion, all the other antidepressants studied (several SSRIs and SNRIs) had a lower rate of a recorded hair loss diagnosis.
• Fluoxetine and paroxetine had among the lowest rates.
• Compared with fluoxetine, bupropion had about a 46% higher relative risk. The authors estimated that around 242 people would need to take bupropion rather than fluoxetine for two years for one extra case of hair loss.

That last figure is the important one. A higher relative risk can still mean a small absolute risk. The study also relied on coded diagnoses, so it could not confirm the type or cause of hair loss in each person.

In a large pharmacovigilance programme across psychiatric hospitals in Austria, Germany and Switzerland, severe hair loss linked to psychiatric medicines was reported in only 43 of more than 400,000 treated patients (about 0.01%). Valproate carried the highest risk, and severe hair loss was reported more often in women than in men ¹². Because it captured only severe cases in hospital, it likely undercounts milder shedding, but it supports the view that serious hair loss from these medicines is rare.

Depression, stress and hair: the other side

It is easy to assume that any hair loss during treatment comes from the medicine. But mental health conditions and hair are linked in other ways too.

• Stress and illness. Major physical or emotional stress is a recognised trigger for telogen effluvium ⁷.
• Alopecia areata. A large United Kingdom cohort study found that people with major depressive disorder were more likely to later develop alopecia areata, and people with alopecia areata were more likely to later develop depression. In that study, antidepressant use was associated with a lower risk of alopecia areata ¹³. This is an observational finding, but it suggests that stopping an antidepressant because of hair concerns is not automatically protective. See Alopecia areata (patchy hair loss): a clear explainer.
• Appetite and diet changes. Depression and some medicines can change appetite and weight. Rapid weight loss, low iron and other nutritional gaps can contribute to shedding.
• Hair pulling. Some people with anxiety pull or twist their hair, which can cause patchy breakage. This needs a different approach.
• Pattern hair loss. Genetic pattern hair loss can start or become noticeable at any adult age and may simply coincide with a new medicine.

What medicine-related hair loss usually looks like

Signs that point towards a medicine-related telogen effluvium include:

• shedding that started roughly two to four months after starting a medicine or increasing the dose;
• diffuse thinning all over rather than bald patches;
• full-length hairs with a small white bulb at the root;
• no scarring, redness or scaling;
• improvement over several months after the dose is changed, if that is done.

Features that suggest something else is going on include smooth round bald patches, a receding hairline or crown thinning that follows a pattern, broken short hairs, or an inflamed, scaly scalp. For a broader overview of drug causes, see Medicines that can cause hair loss: what to know.

Before stopping: what to discuss with your doctor

Do not stop suddenly. The NHS advises not to stop an antidepressant suddenly or without talking to your doctor first. Coming off can cause withdrawal symptoms, which usually start within a few days and last a few weeks, but for some people can be severe and last for months. Your doctor can agree a plan to reduce the dose gradually, usually over weeks or months ⁸. Stopping a mood stabiliser suddenly can also risk relapse, and for antiseizure medicines it can risk seizures.

Useful points to raise:

1. When did the shedding start, and when did you start or change the medicine? Bring dates if you can, or photos.
2. Could it be something else? Ask whether blood tests are needed. Common checks for diffuse shedding may include a full blood count, iron stores (ferritin) and thyroid function ¹⁴. See Blood tests for hair loss: what may be checked and why.
3. For lithium: ask when your thyroid was last checked ³.
4. For valproate: ask whether a dose reduction is possible, or whether another medicine would suit you ¹.
5. For antidepressants: ask whether the hair loss is likely to be related, and if so, whether a different medicine would be reasonable. Any switch should be planned rather than abrupt ⁸.
6. How long should you wait? Telogen effluvium often settles over several months once the trigger is removed or the body adjusts ⁷.
7. Do you need a dermatologist? If the pattern is unclear, or there are patches, scaling or a pattern of thinning, a dermatologist can examine the scalp.

Remember that the medicine was prescribed for an important reason. Effective treatment of depression or bipolar disorder protects your health in ways that matter far more than hair density. In many cases there are reasonable options that address both.

Practical steps while you sort it out

• Be gentle with your hair. Avoid tight hairstyles, harsh chemical treatments and heavy heat styling while shedding is high.
• Eat regularly and well. Adequate protein, iron and calories support hair. If appetite is poor, tell your doctor.
• Track shedding. A simple weekly photo of your parting and hairline can show whether things are improving.
• Do not self-treat with high-dose supplements. More is not better, and some supplements can affect lab results or interact with medicines.
• Ask before adding hair treatments. Topical minoxidil is sometimes used for diffuse thinning, but it can cause early shedding and scalp irritation. A doctor or pharmacist can advise whether it suits you.

When to get help sooner

Contact your doctor promptly if:

• your mood worsens, or you have thoughts of harming yourself, especially around a dose change;
• you have withdrawal symptoms that are severe or long-lasting ⁸;
• hair loss is sudden and heavy, comes in patches, or comes with other symptoms such as rash, fever or marked tiredness;
• you are on lithium and develop tiredness, weight gain or feel the cold, which may suggest an underactive thyroid ^{3 11}.

If you are in crisis, seek urgent help through your doctor, the nearest emergency department or a crisis line.

Life in Malaysia

In Malaysia, psychiatric medicines are prescription medicines and should be reviewed by the doctor or psychiatrist who prescribed them. Hair concerns are a valid reason to book a review; you do not need to wait until the next routine appointment. Avoid buying hair growth products or supplements that make bold claims online; check that cosmetic products are properly notified using NPRA's guidance ¹⁵. If you see a doctor or dermatologist about hair loss, you can check their registration with the Malaysian Medical Council ¹⁶. For non-prescription products, see Hair loss products at the pharmacy: what to ask the pharmacist, and for an overview of hair loss care, see Hair loss treatment in Malaysia: a plain guide to your options.

Bottom line

Hair loss from antidepressants and mood stabilisers is real but, for most medicines, uncommon. Valproate has the clearest link, lithium can affect hair directly and through the thyroid, and among antidepressants bupropion has been linked to a somewhat higher rate than SSRIs and SNRIs ^{1 3 5}. The usual pattern is temporary diffuse shedding that tends to improve over months ^{6 7}. Never stop these medicines suddenly. Bring dates and questions to your doctor, ask about blood tests for other causes, and plan any change together ⁸.

Frequently asked questions

Can antidepressants cause hair loss?

They can, but it is uncommon. A large cohort study found a higher rate of recorded hair loss with bupropion than with SSRIs and SNRIs, though the absolute difference was small.

Which mood stabiliser is most linked to hair loss?

Valproate has the clearest link. Thinning hair or changes in hair colour or texture are listed side effects, and hair often grows back after a dose reduction or switch.

Does lithium cause hair loss?

It can, directly or through an underactive thyroid caused by long-term use. Thyroid blood tests are part of lithium monitoring.

What does medicine-related hair loss look like?

Usually diffuse shedding all over, starting a few months after starting or increasing a medicine, with no bald patches or scarring. This pattern is called telogen effluvium.

Should I stop my medicine if my hair is falling?

No, not on your own. Stopping suddenly can cause withdrawal symptoms or relapse. Talk to your doctor, who can review the cause and plan any change gradually.

Will my hair come back?

Medicine-related telogen effluvium usually improves over several months once the body adjusts or the dose or medicine is changed. Other causes should still be checked.

What tests might help?

A doctor may check a full blood count, iron stores and thyroid function, and review recent illness, stress, diet and weight change.

Can depression itself affect hair?

Stress can trigger shedding, and studies link depression with a higher risk of alopecia areata. In one large study, antidepressant use was linked with a lower risk of alopecia areata.

Educational content. Not medical advice.