If only hand is paining then maybe due to overwork in this lockdown situation can be the causative factor. If her nerve is involved then she’ll be getting pins & needles sensation, for that proper assessment can be done both in the clinic or on video consultations.
If the pain is since 1-2 days apply cold pack for 10 mins and then remove and then re-apply for 10 mins.
If it’s more than 4-5 days apply hot water bottle for 15-20 mins only.
Next Steps
Consult a physiotherapist for proper guidance and exercises.
Health Tips
Rest is the tip along with cold/hot pack.