Postpartum Telogen Effluvium: This condition is characterized by excessive hair shedding after childbirth, typically starting around 3-4 months postpartum. It occurs due to the hormonal changes that happen after pregnancy, where the sudden drop in estrogen levels causes a large number of hair follicles to enter the resting phase, leading to excessive hair fall.

Hypothyroidism: Postpartum thyroiditis can lead to hypothyroidism, which is known to cause hair loss among other symptoms. The condition can arise due to autoimmune inflammation of the thyroid gland following pregnancy.
Iron Deficiency Anemia: Common in postpartum women, especially if there was significant blood loss during delivery. Iron deficiency can lead to hair loss.
Postpartum Stress: Significant psychological stress can cause hair loss due to the body's reaction to stress, similar to telogen effluvium but not necessarily tied to hormonal changes.

Thyroid Storm or Severe Hypothyroidism: Although less common, severe thyroid dysfunction can be life-threatening and requires immediate attention. Hair loss is one of many symptoms.
Pituitary Apoplexy: A rare but potentially life-threatening condition that can occur postpartum, leading to acute pituitary dysfunction. Hair loss might be one symptom among many, including severe headache, visual disturbances, and acute hormonal deficiencies.

Alopecia Areata: An autoimmune condition that can cause patchy hair loss. While not specifically related to the postpartum period, stress from childbirth could potentially trigger an episode.
Systemic Lupus Erythematosus (SLE) Flare: SLE can cause hair loss, and pregnancy can sometimes trigger or worsen SLE symptoms. However, this would be accompanied by other systemic symptoms.
Hyperthyroidism: Though less common than hypothyroidism postpartum, it can also cause hair loss among other symptoms like weight loss, palpitations, and heat intolerance.