Hair loss - Is this loss from AGA or new hair from PRP? (Photos)

Thank you for your message and for sharing your photos and background. I understand how confusing it can be to assess hair changes, especially after undergoing treatments like PRP (platelet-rich plasma).

From the images and your description, a few possibilities can be considered:

Post-PRP Growth vs. AGA (Androgenetic Alopecia)
PRP can stimulate hair regrowth and improve hair density, especially in cases of early hair thinning. New hair regrowth from PRP typically appears as shorter, finer baby hairs that gradually thicken over time. If you’re noticing new growth along the hairline or crown, it may very well be a response to PRP treatment.

In contrast, AGA (commonly known as male or female pattern hair loss) usually presents with miniaturization of hair over specific areas—typically the crown and temples in men, or diffuse thinning over the crown in women. If your doctor in PEI ruled out AGA and there’s no clear pattern consistent with it, that’s reassuring.

Nutritional and Hormonal Factors
A history of anorexia can lead to telogen effluvium—a temporary hair shedding that results from physical or emotional stress, including significant nutritional deficiencies. Recovery from this type of hair loss can take time, and regrowth may not always be uniform. If your nutritional status has improved, hair may be in a regrowth phase, which could also be contributing to what you’re seeing now.

How to Differentiate

New PRP growth often appears fine and short at first but continues to grow longer and thicker.

AGA-related loss usually doesn't spontaneously reverse without targeted treatment (e.g., minoxidil, finasteride).

Telogen effluvium often shows diffuse thinning and recovers within months of correcting the underlying cause.

In your case, the presence of new hair in areas previously thinning and a medical opinion ruling out AGA suggest that your hair changes may be more related to recovery from telogen effluvium and PRP stimulation rather than ongoing patterned hair loss.

Let me know if you notice any specific areas where thinning persists or if there are other symptoms like scalp irritation—those details can help clarify things further.