Hair loss can occur for many different reasons. The most common cause is hereditary thinning, also known as androgenetic alopecia, but there are many other temporary and treatable causes as well.
Androgenetic Alopecia
Also known as male or female pattern hair loss, this hereditary condition typically causes gradual thinning along the crown, widening of the part, or a receding hairline.
Alopecia Areata
An autoimmune condition that causes sudden, patchy hair loss.
Telogen Effluvium
A temporary form of hair shedding often triggered by stress, illness, surgery, weight loss, hormonal changes, or medications. Hair follicles prematurely shift into the resting (telogen) phase of the hair cycle.
Scarring Alopecia
A group of inflammatory conditions that damage and permanently destroy hair follicles, leading to irreversible hair loss if untreated.
Trichotillomania
A hair-pulling disorder in which patients experience repetitive urges to pull hair from the scalp, eyebrows, or other areas.
Medications and Medical Treatments
Certain medications, including some blood thinners, vitamin A derivatives, antidepressants, blood pressure medications, and arthritis treatments, may contribute to hair loss. Chemotherapy and radiation therapy can also cause significant shedding.
Hormonal Changes
Hormonal fluctuations related to pregnancy, childbirth, menopause, thyroid disease, or hormone therapy may contribute to hair thinning.
Nutritional Deficiencies
Low levels of iron, protein, vitamin D, or other nutrients can impact healthy hair growth.
Medical Conditions
Underlying medical conditions such as thyroid disease, lupus, diabetes, anemia, and scalp infections can lead to hair loss.
Scalp Conditions
Inflammatory or infectious scalp conditions, including seborrheic dermatitis or tinea capitis (scalp ringworm), may interfere with normal hair growth.
Hair Styling and Hair Care Practices
Frequent heat styling, chemical treatments, tight hairstyles, or excessive tension on the hair may lead to breakage or traction alopecia over time.