Dry air is another possibility, since these membranes can dry out and be more prone to cracking. In this case, it may be beneficial to swab the membranes with a thick lubricant, such as petroleum jelly, in order to prevent any further bleeds. On the other hand, if your nose bleeds are a joint effort with both nostrils contributing, then direct irritation is an unlikely culprit. In this case, the bleeding results from a greater amount of blood gathering in the nasal membranes than usual in combination with irritation. These conditions can be set about by several causes.
Hypertension is a possibility, as is a vitamin deficiency, some bleeding disorders, and drug abuse.
For women, nose bleeds may also occur periodically following the hormonal fluctuations of the menstrual cycle. In a process called vicarious menstruation, surging estrogen levels in the bloodstream can cause the vessels in the nose to fill up, leading to bleeds. Don't worry, though - this is a very rare occurrence. Whoever manufactures your maxi won't be coming out with something similar for your nose any time in the near future. When a nose bleed does strike, it is best to stop the blood flow by gently pinching above the nostrils.