Lanugo

I'm quite underweight and I've been actively trying to gain. However, I've noticed that I've developed lanugo!! My chest and back is super hairy (light, fine hair - but still there!) How many others have had this? When did it go away?

i had it for a good 5 months, my chest, my back, my face, my arms, EVERYWHERE.

i looked like chewbacca, its gone now though.

Are you at a healthy weight now??

I have this too. It occurs when you lose a severe amount of weight in a short period of time because your body does not have enough fat on it to keep itself warm.

i also have it, chest, back, arms, lower back, my cheeks along my jaw bone (which i hate, but its only noticeable when the sun hits it)