It must be worrying to notice your hair thinning.
There are many causes of hair thinning. From your description of a receding hair, there is a possbility of this being a male pattern hairloss (mph). While there is often a family history of hairloss in mph, this is not always present. Hair on the vertex or top of the head is often thinner as well. Male pattern hairloss is slowly progressive over the years. Treatments like minoxidil scalp lotion and oral finesteride are useful in this condition and can help to maintain the hair and increase the hair density.
The hair in male pattern hairloss does not usually drop out in clumps though. If there is truly an increase hairfall, other conditions like telogen effluvium may be the cause. This is usually caused by a stressful event eg high fever or crash diet. Usually, we consider abnormal hairloss when there is loss of over 100 strands of hair a day. So, do take note of the total number of hair strands lost in a day to know if your fall fall is significant.
Dermatologists do manage hair problems so you may consider seeing a dermatologist for your hair concerns.
Hope this helps!
