Sclerotherapy Problems with Arms and Hands: I now have tingling and dry lined pruned skin on my hands and fingers.

Dry hands, loss of moisture is from the autonomic nervous system and not from nerve injury related to microphlebectomy.H Karamanoukian MD FCS
certified vein specialist from ABVLM and double board certified surgeon
 Tweet

Your doctor was right. It is safe to treat superficial veins of the hands and forearms and blood will be rerouted through the deeper veins.  I do not treat the antecubital vein.  Sclerotherapy should not injure any nerves to cause the tingling. The dryness may be due to the decreased superficial veins but it is hard to tell. Use a moisturizing cream and allow more time to heal.

Moisture loss is not from the veins anyway. So that is unrelated. It could truly just be a change in the environment. Regarding sclerotherapy you only treat small superficial veins that aren't used for essential blood supply. Sclerotherapy simply isn't a procedure that can effect larger veins - those are too big to respond to treatment like this.  "This answer has been solicited without seeing this patient and cannot be held as true medical advice, but only opinion. Seek in-person treatment with a trained medical professional for appropriate care."