Other Forms of Hair Loss
Under the influence of the pregnancy hormones fewer follicles enter the resting stage. However when pregnancy is over those follicles then do enter the resting stage. The result is that at about 3 months post delivery many more hairs are shed. The hairs however do then resume the normal cycling pattern so the increase in hair loss post-pregnancy is not permanent and the hair recovers over a period of months.
Total Follicle scalp hair loss. more information
Other Causes of Alopecia
Zinc or iron deficiency may cause a generalized thinning. The whole scalp is affected. It is however quite rare. There is evidence to suggest that iron and zinc levels are important to maximize hair growth. Malnutrition as a result of severe dieting may result in generalized hair loss three to four months later.
Hypothyroidism (myxoedema) and hyperthyroidisim (overactive thyroid gland) may cause hair loss in women. With correct treatment of the underlying condition the hairloss will recover.
Increased hair loss may follow a severe illness. With recovery, the hair loss will reverse 3-4 months later in most cases.
Discoid Lupus Erythematosus
This may result in areas of permanent hair loss in the scarred scalp areas.
Hair thinning may occur if there are plaques on the scalp but the hair usually regrows once the flare-up subsides.
Excessive brushing and the use of some colorants may increase hair breakage and the sense of hair thinning. Hairstyles that exert traction on the hair for long periods of time may cause traction alopecia.