Hair loss and scalp conditions
Losing 50 to 100 hairs a day is normal. Shedding more than that, a receding hairline, thinner hair or bald patches have different causes: stress, childbirth, anemia, thyroid disease, hormones, genetics or autoimmune disease. Treatment depends on finding the cause.
Summary
- Consultation
- Scalp examination with a dermatoscope (trichoscopy) and history of the hair loss
- Lab tests
- Blood tests when anemia, thyroid or hormonal changes are suspected
- Treatment
- Topical and oral medication; in-office scalp injections when indicated
- Interval between injections
- Usually every 45 days
- First response
- 3 to 6 months, the length of the hair growth cycle
Who it is for
For women and men with shedding that lasts more than three months, thinning hair, a receding hairline, round bald patches, itching, heavy dandruff or sores on the scalp.
How it works
Dr. von Kossel examines the scalp with a dermatoscope, which shows the thickness of each hair and the skin around it. This exam, called trichoscopy, tells the most common types of hair loss apart during the consultation. When needed, she orders blood tests.
Once the cause is clear, the plan may combine topical solutions or tablets and, in some cases, in-office scalp injections. Seborrheic dermatitis, an inflamed form of dandruff, has its own treatment with shampoos and lotions.
What to expect
Hair grows about 1 cm a month, so the effect of treatment shows only after a few months. Progress is checked with standardized photos taken in the office.
Frequently asked questions
Does hair grow back after shedding caused by stress or COVID?
In most cases, yes. This type of shedding, telogen effluvium, appears 2 to 3 months after the event and usually stops on its own within a few months. The consultation confirms the type and rules out other causes.
Do hair vitamins help?
Vitamins help when a nutrient such as iron or vitamin D is missing. Without a deficiency, they do not treat pattern hair loss.
Last updated November 10, 2026 · Medical director (responsável técnica): Dr. Karen von Kossel, CRM-SP 107714 · RQE 58534