Because the dragonfruit cactus is a cactus / succulent, it can more readily tolerate periods of dryness than it can tolerate long periods with too much moisture. Bear this in mind when when planting dragon fruit and choosing a location and preparing the soil and/or planting area.
Trouble in the mouth is the indication of low vitamin B complex in the body. A burning sensation in the mouth and tongue is a common effect of B vitamin deficiency. Deficiency of B complex also results in a swollen tongue, and people with this deficiency find it hard to swallow.
Vitamin B 6 Deficiency and Dependency. Because vitamin B6 is present in most foods, dietary deficiency is rare. Secondary deficiency may result from various conditions. Symptoms can include peripheral neuropathy, a pellagra-like syndrome, anemia, and seizures, which, particularly in infants, may not resolve when treated with anticonvulsants.