Dullness - Dryness - Split Ends - Flakiness - Frizziness - Tangles and Mats, there are several causes behind these hair care problems. Some of the most common are: Health problems such as anaemia, hypothyroidism, diabetes, or lupus can cause hair loss. Medication side effects include birth control pills, chemotherapy drugs, some anti-seizure medications, high blood pressure medication (calcium channel blockers), beta-blockers (for high blood pressure and heart disease), cholesterol-lowering drug