SACEDA
Telogen effluvium
Telogen effluvium is a disruption in the natural hair growth cycle that leads to sudden and excessive hair shedding, although it is typically reversible. While it can be distressing, it does not cause permanent baldness and, in most cases, resolves over time.
What causes telogen effluvium?
Hair naturally cycles through phases of growth, rest, and shedding. When this cycle is interrupted—due to internal or external factors—it can lead to telogen effluvium. After the triggering event, hair enters the shedding phase prematurely, and noticeable hair loss occurs about 2 to 4 months later.
Common triggers include:
- Viral infections such as flu or COVID-19
- Recent surgery or medical procedures
- Intense physical or emotional stress
- Hormonal changes, such as those after childbirth
- Nutritional deficiencies
- In some cases, the cause may not be clearly identifiable
Symptoms and diagnosis
The most noticeable sign is significant hair loss, often seen while brushing, washing hair, or finding loose strands on pillows or in the shower. Although this can be alarming for the person experiencing it, it’s not always obvious to others unless there’s a visible decrease in density, especially around the hairline.
It’s important to distinguish telogen effluvium from other types of hair loss, such as hormonally driven thinning. A professional assessment is recommended, which may include a scalp examination (trichoscopy) and comprehensive blood tests to rule out nutritional imbalances or other underlying issues.
If the shedding persists for more than six months, the condition is considered chronic telogen effluvium. This form is more common in women over the age of 40 and requires further evaluation to exclude ongoing triggers or to confirm a diagnosis of idiopathic chronic telogen effluvium (a long-term condition without an identifiable cause).
Is there a treatment?
In many cases, acute telogen effluvium resolves on its own once the underlying cause is addressed. Identifying and correcting the trigger—such as nutritional imbalances or hormonal fluctuations—is key. Gradually, hair shedding slows down and the regrowth phase begins. This recovery process can take several months, sometimes up to a year.
Mild cases, such as seasonal hair shedding, often don’t require medical treatment. However, if the hair loss is more intense, prolonged, or noticeably reduces hair volume and density, it may be advisable to explore personalized hair restoration plans in consultation with a specialist.
For chronic cases, ongoing medical follow-up is typically recommended. In some situations, long-term supportive therapy may help maintain hair density and prevent further shedding.
