Tingling, Slight Pain and Numbness in the Legs After Laser Vein Treatment - Normal?

Hello! Thank you for your question! Numbness after any surgical
procedure is expected for several weeks to months following. As the
nerves to the area are traumatized and will then experience a temporary
neuropraxia, a transient loss of nerve conduction. This usually
resolves over the next 6-12 weeks, but depending on the procedure
performed, sometimes much longer. Typically this should resolve by 1
year. As it goes past this date, the likelihood of the sensation
returning is small. However, it can take up to 2 years. If no return
from there, it is unlikely to return. It should be discussed that
persistent sensory changes may develop following any surgical
procedure. The usual signs of the nerves regenerating and neuropraxia
resolving is itching, followed by a burning sensation and then
occasional sharp, shock-like pains. These will be normal to experience,
and actually a promising sign. Usually, normal sensation returns, but
is is also possible to have decreased sensation or even increased
sensation to the areas affected. Re-educating nerves postoperatively is
often helpful and will allow proper instruction for the affected
sensory nerves - methods include using different textures to the
affected areas when showering, bathing, applying lotion, etc. If
bothersome, there are some medications that may be helpful, including
Neurontin for pain for hypersensitivity. You can try various textures
such as washcloths, loofahs, cotton sheets, etc. Massaging the areas is
also beneficial for the incision to make the finest scar possible. The
last place to regain the sensation will be directly adjacent to the
incision/scar as the nerves will make its way from the periphery to this
location. If continual pain arises, evaluation is warranted. After
ruling out other causes, one rare explanation may be that a neuroma has
developed and may require surgical excision. This is very unlikely
unless a large sensory nerve has been transected inadvertently during
the procedure. Hope that this helps! Best wishes!

If enough veins are treated, there can be swelling and this can cause some tingling with the fluid retention.  This is not something to be too overly concerned with.

If this was an endovenous ablation procedure like EVLT, you should see the vein specialist who performed the procedure.If this was cosmetic laser procedure, the numbness will go away in most cases. 

this will sometimes occur after laser treatment. just wait it out and it should go away.  sclero typically has less side effect profile but even sclero can cause staining or hyperpigmentation if not done properly.

The tingling and slight pain are normal, however if you have significant numbness through the  leg, that is not a normal post procedure occurrence and you should have it examined by the doctor who performed the procedure.  Your doctor will be able to advise you as to what needs to be done, if anything at all.