What medications cause hair loss in females
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Medications Causing Hair Loss in Females
Hair loss in females can be a distressing side effect of various medications. This article synthesizes research findings on the medications known to cause hair loss in women, focusing on the mechanisms and types of hair loss induced by these drugs.
Psychotropic Medications and Hair Loss
Antidepressants and Hair Loss
Several psychotropic drugs, including antidepressants, have been linked to hair loss in females. Tricyclic and tetracyclic antidepressants, selective serotonin reuptake inhibitors (SSRIs), serotonin norepinephrine reuptake inhibitors (SNRIs), and serotonin modulators like trazodone and nefazodone are known to cause temporary telogen hair loss . The mechanism often involves an antimitotic effect, which disrupts the hair growth cycle, leading to conditions such as telogen effluvium, where hair prematurely enters the resting phase .
Dopaminergic Agents and Mood Stabilizers
Dopaminergic agents and mood stabilizers are also implicated in drug-induced alopecia. The involvement of sympathetic nerve fibers, particularly in dopaminergic agent-related hair loss, has been suggested . These medications can lead to a diffuse, nonscarring, and reversible loss of hair, typically becoming noticeable a few months after starting the treatment .
Antiandrogens and Hair Loss
Spironolactone
Spironolactone, a potassium-sparing diuretic with antiandrogen properties, is used off-label for female pattern hair loss (FPHL). While it is effective in treating hirsutism and has shown promise in arresting hair loss progression, it can also cause hair loss in some cases . The drug works by reducing adrenal androgen production and blocking androgen receptors in target tissues .
Finasteride
Finasteride, a 5α-reductase inhibitor, is another antiandrogen used for FPHL. However, its use is limited due to potential teratogenic effects. While it can be effective, it may also contribute to hair loss in some women . The response to finasteride varies, and it is often used in combination with other treatments like minoxidil .
Other Medications
Antineoplastic Agents
Antineoplastic agents, used in cancer treatment, are well-known for causing anagen effluvium, a type of hair loss that occurs within days to weeks of drug administration. These drugs cause acute damage to rapidly dividing hair matrix cells, leading to significant hair loss .
Anticoagulants and Retinoids
Anticoagulants and retinoids (vitamin A derivatives) can precipitate telogen effluvium, where hair loss becomes evident 2 to 4 months after starting the medication. This type of hair loss is usually reversible upon discontinuation of the drug .
Other Drugs
Other medications that can cause hair loss include interferons, antihyperlipidemic drugs, and various other agents. The prevalence and severity of drug-induced alopecia depend on the specific drug and individual predisposition 35.
Conclusion
Hair loss in females can be caused by a variety of medications, including psychotropic drugs, antiandrogens, antineoplastic agents, anticoagulants, and retinoids. The type and severity of hair loss depend on the drug, its dosage, and the individual's susceptibility. Understanding the potential side effects of these medications is crucial for managing and mitigating hair loss in affected women.
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