Beta blockers are medications prescribed for cardiovascular conditions. They block adrenaline, slowing heart rate and relaxing blood vessels. Applications include managing high blood pressure, heart rhythm disorders, and angina. They also treat migraines, glaucoma, and anxiety. While effective, individuals seek information about potential side effects, such as hair loss.
Do Beta Blockers Cause Hair Loss?
Hair loss is a reported, uncommon side effect of beta blockers. Many individuals take these medications without hair changes, but a small percentage may notice increased shedding. Its incidence is rare, often affecting less than 1% of users. This diffuse hair loss occurs evenly across the scalp.
Onset can vary, appearing weeks to months after starting. If hair loss occurs due to beta blocker use, it is usually temporary. Hair growth usually returns to normal once the medication is discontinued, though this can take several months. Patients should never stop prescribed medication without consulting their healthcare provider.
How Beta Blockers Can Affect Hair Growth
Beta blockers may cause hair loss through telogen effluvium. This occurs when many hair follicles prematurely enter the resting (telogen) phase. Normally, 10-15% of follicles are in this phase, shedding to make way for new growth.
When triggered by a beta blocker, a larger proportion, sometimes up to 30% or more, can simultaneously enter the telogen phase. This synchronized entry leads to accelerated shedding two to four months later. Hair loss is diffuse because the effect is widespread. This process does not damage follicles, making hair loss temporary and reversible once the trigger is removed.
Managing Hair Loss While Taking Beta Blockers
Individuals experiencing hair loss while taking beta blockers should consult their healthcare provider before changing medication. A medical professional can determine if hair loss relates to the beta blocker or other factors. Stress, nutritional deficiencies, thyroid disorders, or other medications can also cause hair shedding.
Adjusting dosage or switching to an alternative medication may be considered under medical supervision. Exploring different beta blockers or other blood pressure medications is an option if hair loss is bothersome and linked to the current prescription. Patients must work closely with their doctor to weigh the beta blocker’s benefits against hair loss. Hair loss is often reversible once medication is stopped or changed, with growth resuming within several months.