Yes..reversible..You are suffering from hormonal changes causing Androgenetic alopecia causing hair fall. It's completely stoppable even regrowth of hair is possible with certain medications without any side effects. Treatment depends on the grade of hair loss. So, it's a must for diagnosing which grade, you are in for an effective treatment. Please  send more photos of your head, by direct online consultation for accurate diagnosis and proper treatment.

The condition is called as Androgenetic Alopecia or Male pattern Baldness and Staging of the condition can only be done after detailed inspection of the hairline. Kindly consult a dermatologist for the detailed discussion on diagnosis and treatment.

No need to worry.specific treatment is available.it depends on severity of the disease . Complete medical history is required.. Pls do online consultation with Dermatologist for detailed prescription & guidance.