welcome to HCM.
good that you sought timely help.
hand weakness, vomitting are cerebral signs and are important if MRI
shows a venous angioma
medicines are not of use.
pl. consult a neurosurgeon urgently to see if any surgery is needed soon. if not you could take symptomatic treatment. it all depends on many factors of the angioma.
It could bleed and get serious.
so take neurosurgical opinion and act on it.
pl. keep me posted on progress. good luck