Are LPP/FFA Treatments Safe in Pregnancy or Breastfeeding?

If you are planning to become pregnant, are currently pregnant, or are breastfeeding, the safety of your lichen planopilaris (LPP) or frontal fibrosing alopecia (FFA) treatments depends heavily on the specific medication. LPP and FFA are inflammatory conditions where the immune system attacks hair follicles, and treatment aims to stop this inflammation to prevent permanent scarring and hair loss ^[1][2]. Balancing the need to protect your hair with the safety of a pregnancy or a nursing infant requires a coordinated team approach between your dermatologist and obstetrician.

Urgent Action for Unplanned Pregnancy: If you are planning a pregnancy, do not make routine changes to your medications without consulting your doctor. However, if you discover you are pregnant while taking a restricted medication (like finasteride, dutasteride, methotrexate, mycophenolate, or a retinoid), contact your prescribing doctor or obstetrician immediately for urgent instructions on whether to stop the medication. An exposure does not automatically guarantee fetal harm, but you need prompt, drug-specific guidance.

Treatments That Require Strict Avoidance During Pregnancy

Some medications used to treat hair loss are known teratogens, meaning they carry a high risk of causing birth defects, and must be avoided during pregnancy.

• Finasteride and dutasteride: These medications, known as 5-alpha reductase inhibitors, are heavily restricted during pregnancy because they can interfere with the development of male fetuses, potentially causing genital abnormalities ^[3][4]. Pregnant individuals should avoid any contact with these drugs; this includes not handling crushed or broken finasteride tablets, or leaking dutasteride capsules ^[5]. If your male partner is taking these medications, the risk from semen exposure is generally considered low for finasteride, but you should discuss paternal use and any needed precautions with your doctor ^[4][6].
• Methotrexate and mycophenolate mofetil: These systemic immunosuppressants must be stopped well before conception due to proven teratogenicity ^[7][8].
• Systemic Retinoids: Oral retinoids, such as isotretinoin, carry a very high risk of severe birth defects ^[9][10].

Washout Periods and Preconception Planning

If you are taking a restricted medication, you will need a customized “washout period”—a specific amount of time you must wait after stopping the drug before trying to conceive to ensure it is completely cleared from your body.

Washout periods are highly drug-specific and are not the same as a drug’s half-life (the time it takes for half of the drug to leave your system). For example, dutasteride has a half-life of about five weeks ^[11]. This does not mean it is safe to conceive after five weeks; it means the drug can take many months to fully clear from your body. Conversely, finasteride has a much shorter half-life of 4.5 hours ^[11], but your doctor will still prescribe a specific safe waiting period. Other drugs have established guideline intervals, such as methotrexate, which is commonly stopped at least three months before conception ^[12].

Always rely on your doctor to set your specific washout timeline and contraception requirements. Discontinuing an effective systemic treatment without a bridge plan can lead to a flare-up of your symptoms and progressive, permanent hair loss ^[13].

Treatments to Consider with Specialist Supervision

Many patients can successfully manage their LPP or FFA during pregnancy using alternative therapies. These are not entirely risk-free, but they may be used when the benefits outweigh the risks under specialist supervision.

• Corticosteroids: Potent topical (applied to the scalp) or intralesional (injected into the scalp) corticosteroids are common first-line treatments for LPP and FFA ^[14]. Glucocorticoids are generally considered compatible with pregnancy, though their safety and systemic absorption depend on the potency, the amount used, and the duration of treatment ^[7][15].
• Hydroxychloroquine: Frequently used to calm inflammation in LPP and FFA, this medication has a long history of use in pregnant patients with other autoimmune conditions like lupus. Current data generally supports its safety during pregnancy ^[16][17], though it requires specific dosing and monitoring.
• Cyclosporine: Another systemic immunosuppressant, cyclosporine is generally considered compatible with pregnancy but requires strict specialist supervision, as it carries maternal risks such as high blood pressure and kidney toxicity, and may be associated with preterm birth or low birth weight ^[7][15].

Minoxidil

Minoxidil is an adjunct treatment used to stimulate hair growth; it does not suppress the immune attack or prevent the scarring seen in LPP and FFA. Whether used as a topical solution or a low-dose oral pill, medical consensus generally recommends avoiding minoxidil during both pregnancy and breastfeeding ^[18][19].

Breastfeeding Considerations

Medication safety during breastfeeding is evaluated differently than during pregnancy, as drug transfer into breast milk is unique to each medication.

• Compatible options: Hydroxychloroquine is generally considered compatible with breastfeeding ^[16][20].
• Medications to avoid: Minoxidil (both oral and topical) is generally avoided during lactation ^[18].
• Individualized advice needed: Drugs like finasteride, dutasteride, methotrexate, and mycophenolate require highly individualized advice regarding breastfeeding, as data is often limited or indicates potential risk to the infant. If you are using topical corticosteroids, you must take special precautions to ensure your infant does not come into contact with the treated areas of your skin.