You should consult a dermatologist for hair loss or a trichologist.
2. Is genetics involved in hair loss?
Yes, it is. It is involved in the case of pattern baldness, especially in men. It could be involved in alopecia areata too.
Chances of suffering from alopecia are higher if you have a relative who has the condition and if there are family members with autoimmune disorders like diabetes, lupus or thyroid disease.