When i was i think 19 i had chicken pox. i had a fever for about two weeks. after i recovered, one day when i woke up i saw my pillow had many hairs on it and when i combed my hair, many hairs fell out. before i had chicken pox my hair was very thick and long, but now is not so much bald but the thickness is gone. my hair in front of my head is in the shape of an M. and my hair in the top is not very thick now. im 22 now.
What you describe is very common. Significant illness or stress to your body can precipitate a “telogen effluvium”, also known as a “shedding phase” which is transient – it grows back. Now, several years later, the “M” shaped hairline you describe is consistent with male pattern balding – another common condition. These two conditions are likely unrelated. Hope that helps!