These influences can cause itching or dry out your scalp

Internal Influences
- Stress
- Genetic predisposition
- Hormonal changes
- Age

External influences
- Weather conditions
- Aggressive hair shampoos
- Hair dye
- Washing hair too often and with water that is too hot
- Coarse brushes
- Hot hair dryers/curling irons
- Mechanical irritation from wearing hats or helmets
- Alcohol
- Smoking
- Medication

Diseases
- Atopic dermatitis
- Psoriasis
- Fungal infections
- Other skin diseases



