What Is Telogen Effluvium?

i am a 13 year old female with pretty bad hair loss. last week, my mom brought me to a dermatologist and she said that i had a dry scalp with dandruff and telogen effluvium. do people go bald or have bad hair thinning when they have telogen affluvium? how long does it last? it has been happening to me for about a month and 7 days or so. i take vitamins and am very healthy. should i be nervous and scared to get my hair wet or to brush it? what can i do? please help. thanks. goodbye

You will find extensive reviews of this subject at eMedicine and Wikipedia.