Hair Loss
- Hair grows in cycles ———————— Any given point of time
- Anagen – Growth phase – lasts for 2 – 5 years – 85 – 90%
- Catagen – Regression phase – lasts for 2 – 3 weeks – 5 – 6%
- Telogen – Resting phase – lasts for 5 – 6 weeks – 10 – 15%
Classification of Hair Loss
SCARRING
- Localised – DLE, T.capitis, idiopathic, herpes zoster, pesudopalade
- Diffuse – DLE, folliculitis decalvans , radiotherapy, LPP
NON SCARRING
- Localised – male pattern baldness, alopecia Areata, traumatic
- Diffuse – male pattern baldness , alopecia Areata, syphilis , telogen effluvium, nutritional deficiency, post partum, diabetes , HIV, liver disease, hypothyroidism