Hello,
For loss of cuticles from the nails, fungal infection and bacterial infections of the nails which may cause paronychia should be ruled out. Paronychia results from a breakdown of the protective barrier between the nail and the nail fold. It is diagnosed by gram staining and KOH wet mounts from the skin and nail scrapings. So I suggest you to get the gram staining and KOH wet mounts done from a dermatologist.
It is very difficult to precisely confirm a diagnosis without examination and investigations and the answer is based on the medical information provided. For exact diagnosis, you are requested to consult your doctor. I sincerely hope that helps. Take care and please do keep me posted on how you are doing.