Hair loss is not a single condition — it is a symptom with many possible causes, each requiring a different approach. Understanding why your hair is falling out is the essential first step toward effective treatment. Here, we break down the most common types of hair loss, their causes, and the evidence-based treatments that address each.
Androgenetic Alopecia (Pattern Hair Loss)
The most common cause of hair loss in both men and women, androgenetic alopecia is driven by genetic sensitivity to DHT (dihydrotestosterone). DHT causes hair follicles to miniaturize progressively — producing thinner, shorter hairs until the follicle becomes dormant. In men, this typically presents as a receding hairline and crown thinning. In women, it usually presents as diffuse thinning across the top of the scalp.
Evidence-based treatments: PRP, PRF, exosome therapy, minoxidil (topical), finasteride (men), low-level laser therapy (LLLT). PRP and PRF are particularly effective because they address the follicular biology directly — stimulating dormant follicles and improving scalp vascularity.
Telogen Effluvium (Stress-Related Shedding)
Telogen effluvium is a diffuse, temporary hair loss triggered by a physiological stressor — illness, surgery, significant weight loss, nutritional deficiency, hormonal changes (including postpartum), or severe emotional stress. The stressor causes a large proportion of hair follicles to simultaneously enter the telogen (resting) phase, leading to significant shedding 2–4 months later.
Treatment: Address the underlying cause. PRP can accelerate recovery by stimulating follicles to re-enter the growth phase. Most cases of telogen effluvium resolve spontaneously within 6–12 months once the triggering stressor is resolved.
Alopecia Areata
Alopecia areata is an autoimmune condition in which the immune system attacks hair follicles, causing patchy hair loss. It can affect the scalp, eyebrows, eyelashes, and body hair. PRP has shown promise in clinical studies for alopecia areata, though results are variable. A dermatologist or physician consultation is essential for proper diagnosis and treatment planning.
Nutritional and Hormonal Hair Loss
Deficiencies in iron, ferritin, zinc, vitamin D, and biotin can all contribute to hair loss. Thyroid dysfunction — both hypothyroidism and hyperthyroidism — is a common and often overlooked cause of hair loss. Hormonal imbalances including PCOS, elevated androgens, and post-menopausal estrogen decline can also drive hair loss. Comprehensive laboratory evaluation is an important part of any hair loss assessment.
