Hair grows in cycles. Anagen, the growth phase lasting between 3-6 years. Telogen, the resting phase lasting just a few months. Catogen when the hair falls and is replaced by new hair.
Some drugs can affect the natural length of these phases and promote hair loss, known as anagen effluvium and telogen effluvium.
Telogen interrupts the resting phase causing the hair to fall out early and commonly occurs around 3 months after taking the drug. Anagen effluvium occurs within the first days of taking the drug, causing individuals to lose most or all of their hair; as with chemotherapy.
1. Thyroid medications
2. Acne drugs
3. Immune system suppressants
6. Epilepsy drugs (anticonvulsants)
8. Antifungal drugs
9. Hormone replacement therapy
10. Cancer drugs
Always consult a medically qualified person for advice.